Latin · prefix
com-
with, together; sometimes thoroughly
Forms
- com-
- con- — Used before many consonants in Latin.
- col- — Used before l in Latin.
- cor- — Used before r in Latin.
- co- — Shortened especially before vowels.
Origin
Reconstructed Proto-Indo-European *kom, ‘with; beside.’
Note
In some formations, togetherness shades into completeness; the prefix’s exact contribution can be uncertain.
Words sharing this root
accompanyTo go along with someone or something.accomplishTo successfully complete or achieve something.accomplishmentSomething achieved through effort or developed skill.coalesceTo come together into a unified whole.coerceTo force someone to act through pressure or threats.coercionThe use of force, threats, or pressure to make someone act.cogentConvincing through clear, logical reasoning.cognitionThe mental process of acquiring and understanding knowledge.cognitiveRelating to the mental processes of gaining and using knowledge.cognizanceAwareness or knowledge of somethingcognizanceA court's authority to hear and decide a mattercognomenAn additional name identifying a person or family.cohabitationLiving together, especially as unmarried romantic partners.coherenceA stable connection that makes separate parts hold together.coherentMaintaining a consistent relationship among its parts.cohesionThe quality of parts holding together as a whole.cohesiveForming a unified whole with connected parts.coilA length wound into loops or spirals, or winding it into that shape.coincideTo match exactly in position, time, or character.coincidenceA connection between events or circumstances that seems to happen by chance.coincidentOccupying the same point in space or time.collaborateTo work with others toward a shared purpose.collaborationCooperative work toward a shared result.collaboratorSomeone who works with others on a shared undertaking.collapseTo fall down suddenly through loss of support or strength.collateTo gather and arrange items or information in a useful order.collateralProperty pledged to secure a loan.collationThe arrangement of items in a set order.colleagueA person one works with professionally.collectTo gather things together into one's possession.collectA short formal prayer in a church service.collectionThe gathering of separate things together.collectiveOrganized or considered as a unified group.collectorA person or device that gathers specified items.collegeAn institution or division providing education beyond high school.collideTo strike against another moving object.collisionAn impact caused by two things occupying the same space.colludeTo cooperate secretly for a dishonest or illegal purpose.collusionSecret cooperation for a dishonest or illegal purpose.combatTo fight actively against an opponent.combatantA person or group engaged in or prepared for fighting.combinationA group of things brought together in a particular way.combineTo unite parts or activities into a working whole.comfortEase or relief from discomfort or distress.comfortableFree from discomfort or worry.commandAuthority to direct an activity or situation.commemorateTo honor or preserve the memory of someone or something.commemorationA tribute honoring the memory of a person or event.commendTo express approval of someone or something as worthy.commendableDeserving praise or approval.commendationFormal praise or recognition of merit.commendatoryExpressing praise or approval.commensurateMatching in size, degree, or proportion.commentA spoken or written remark, or the act of making one.commerceThe buying and selling of goods and services.commiserateTo express sympathy for someone's trouble or sorrow.commissionA fee paid for arranging a sale or service.commitTo place something under a settled responsibility or obligation.commitTo carry out a wrongful or harmful act.commodeA toilet or chair fitted for use as a toilet.commodeA low cabinet or chest of drawers.commodiousHaving plenty of space for comfortable use.commotionA noisy disturbance with confused or excited activity.commutationThe substitution of one thing for another.commutationThe ability to change the order of operations without changing the result.commutationThe switching of current direction in an electrical machine.commutationRegular travel between home and work.commuteTo replace something with another form or equivalent.commuteRegular travel between home and work or school.compactSmall and efficiently arranged to occupy little space.compactA formal agreement between parties.companionSomeone or something accompanying another.companyPeople brought together through association or shared activity.comparableSimilar enough in relevant qualities to be fairly compared.comparativeShowing how one thing stands relative to another.compareTo consider how things are alike or different.comparisonAn examination or expression of how things are alike or different.compartmentA separate section within a larger whole.compassA two-armed tool for drawing circles or measuring distances.compassAn instrument that indicates direction relative to magnetic north.compassThe extent or limits of something.compassionConcern for someone who is suffering and a desire to help.compatibleAble to exist or work well together.compatriotA person from the same country as someone else.compelTo force someone to act or respond in a particular way.compendiumA concise collection of information on a subject.compensateTo provide something that offsets work, loss, or disadvantage.compensationSomething provided in return for work or to offset a loss.compensatoryIntended to make up for a loss, disadvantage, or deficiency.competeTo try to succeed against others or be as good as them.competenceThe ability or knowledge needed to do something well.competencySufficient ability to carry out a particular task.competentPossessing sufficient ability or qualification to act.competitionRivalry among parties pursuing the same goal.competitorA person or thing competing against others.complacentToo satisfied with oneself or a situation to notice risks or faults.complainTo say that something is wrong or unsatisfactory.complainantA person who makes a formal complaint or accusation.complaintA statement alleging a problem or wrongdoing.complaintAn illness or symptom affecting the body.complementSomething that completes or improves another thing, or the act of doing so.completeHaving all required parts with nothing remaining to be done.completionThe bringing of an undertaking to its intended end.complexA whole made up of many interconnected parts.complexionThe outward appearance of facial skin.complicateTo make something more complex or difficult.complicationAn additional difficulty that makes a situation harder to manage.complicityInvolvement with others in wrongdoing.complimentAn expression of praise or admiration, or the act of expressing it.complyTo act as requested or required.componentA part that makes up a larger whole.comportTo agree or fit with something.comportTo conduct oneself in a particular way.comportmentA person's manner of behavior and bodily bearing.composeTo put parts together into a whole.compositeA whole made from different parts or materials.compositionThe combining of elements into a unified work.compostDecayed organic matter used to enrich soil, or making it from organic waste.compoteFruit prepared by cooking or preserving it in syrup.compoundTo combine separate elements into a larger whole.comprehendTo understand the meaning or importance of something.comprehensibleAble to be understood.compressTo reduce the space occupied by something.compressA folded cloth pad held against the body to treat an injury or relieve discomfort.compressionReduction of the space or range something occupies.compressorA device reducing the volume or range occupied by something.compromiseAn agreement reached by each side giving up something.compromiseA weakening or endangering of something valuable.compulsionA force experienced as leaving no freedom to refuse an action.compulsiveDriven by an urge that is difficult to control.compulsoryRequired by a rule, law, or authority.compunctionA feeling of guilt or hesitation about doing something wrong.computationThe process of working out a result through calculation.computeTo calculate a result, especially using a computer.concatenateTo join things end to end in a series.concatenationThe joining of things into a connected series.conciseExpressing ideas clearly in few words.conclaveA private meeting, especially of important people.conclusionThe final point reached in a process.concoctTo create something by combining ingredients.concoctionSomething prepared by combining ingredients.concomitantAccompanying or associated with something else.concordAgreement or harmonious correspondence between parts.concourseA gathering together in one place.concreteSpecific and real rather than abstract or vague.concreteA hard building material made by mixing cement, sand, stone, and water.concubineA woman who lives with a man as a sexual partner without the status of a wife.concussionA violent jolt or impact.condemnTo judge someone or something deserving of rejection or punishment.condemnationA judgment declaring something wrong or unacceptable.condemnationThe legal taking of private property for public use.condensationThe process of making something denser or more compact.condensationA chemical reaction that joins molecules while releasing a small molecule.condenseTo reduce something to a denser, more compact form.condescendTo act toward others from a presumed superior position.condescensionTreating others as beneath oneself.conditionThe state of fitness in which something exists.condoleTo express sympathy to someone who is grieving or suffering.condominiumAn individually owned dwelling with jointly managed common areas.condominiumJoint sovereignty or control exercised by two or more authorities.condoneTo accept or overlook wrongdoing without objection.conductTo guide the course of an activity or movement.conductTo allow energy to pass through a substance.confabulationAn informal conversation or discussion.confabulationAn invented memory believed to be true.confectionAn elaborately prepared sweet food.confederacyAn alliance whose members pursue a shared purpose.confidantA trusted person with whom private matters are shared.confideTo entrust something private or important to another.confidenceTrust in the reliability of someone or something.confidentSure of one's abilities or of a favorable outcome.configurationThe way the parts of an object or system are arranged.configureTo arrange something's parts or settings for a particular use.confirmTo establish something more firmly as valid or settled.confirmationAn act establishing something as valid or settled.confiscateTo take property by authority, especially as a penalty.conflagrationA large destructive fire.confrontto face or make someone face something difficultconfrontationA direct encounter with a person, problem, or opposing force.confuseTo make distinctions or understanding unclear.confusedLacking clear order or understanding.confusionA lack of clear order or distinction.congealTo become or cause to become thick or solid.congenialPleasantly suited to someone's nature, tastes, or needs.congenitalPresent from birth or rooted in the earliest stages of development.congestTo cause or become blocked by crowding or buildup.congestionExcessive accumulation that impedes normal flow.congratulationAn expression of pleasure at someone's success or good fortune.conjectureA conclusion based on incomplete evidence, or forming such a conclusion.conjugalRelating to marriage or the relationship between spouses.conjugateLinked with another member in a defined pair.conjugateGive the grammatical forms of a verb.conjugationAn arrangement of chemical bonds that allows electrons to spread across several atoms.conjugationThe joining of cells to exchange or combine genetic material.conjugationThe changing of verb forms to express grammatical information.connubialRelating to marriage or married life.conquerTo overcome resistance and gain mastery.conquerorA person who defeats others or takes control by force.conquestSuccess in overcoming resistance and gaining control.conscienceAn inner sense of right and wrong.consciousAware of one's experience or circumstances.consequentFollowing from a condition as its result.conservancyAn organization that protects and manages natural resources.conservationThe preservation of something against loss or depletion.conservativeFavoring traditional political values and limited change.conservatorA person entrusted to protect or manage something valuable.conserveTo keep something from being lost, damaged, or wasted.conserveA sweet spread made by preserving fruit with sugar.consignTo deliver someone or something into another's keeping.consistTo have specified parts as its essential makeup.consistenceThe thickness or firmness of a substance.consistenceAgreement among parts without contradiction.consistencyAgreement without variation or contradiction.consistencyThe degree of thickness or firmness of a substance.consistentStaying the same in behavior, quality, or results over time.consolationComfort or a benefit that eases loss, disappointment, or distress.consoleTo comfort someone who is sad or distressed.consolidateTo bring parts together into a stronger unified whole.consolidationThe strengthening of something by making it more unified.consolidationA period when market prices move within a narrow range without a clear trend.consonantA speech sound formed by obstructing airflow in the vocal tract.consonantIn agreement or harmony with something.consortTo associate or act together in a shared relationship.consortiumA group of organizations working together for a shared purpose.conspicuousStanding out and easily noticed.constipationDifficulty or infrequency in passing stools.constituentA member forming part of a larger whole.constituentHaving authority to create or amend a constitution.constituteTo form or establish a particular whole.constitutionThe fundamental organization and makeup of something.construeInterpret words, actions, or facts in a particular way.consumeTo take in or use something until it is spent.consummateTo bring to full completion or perfection.consummationThe full completion of something.consumptionThe taking in or using up of a resource.consumptionAn old name for tuberculosis.contactDirect touching or interaction between parties.contagionThe passing of an infection between organisms.contemplateTo think carefully about something.contemplationDeep thought about something, especially what to do.contemplativeGiven to deep thought or meditation.contemporaryExisting within the same period of time.contendTo press one's position against opposition.contentWhat is contained within something.contentionThe pressing of a position against opposition.contentmentA state of quiet satisfaction and ease.continentOne of Earth's major continuous landmasses.continentAble to control urination or bowel movements.contingentA group representing a larger body at an event or gathering.contingentDepending on circumstances or chance rather than being certain.continuumA continuous range with gradual differences and no sharp divisions.contortTo twist or bend out of a natural shape.contortionA severely twisted bodily position or movement.contourThe outline or surface shape of something.contributeTo supply a part that helps produce a result.contributionA part supplied toward a larger effort or result.contributorA person or thing that gives something or helps produce a result.contusionA bruise caused by injury without breaking the skin.convalesceRecover health and strength after illness or injury.convalescenceThe period of regaining health and strength after illness or injury.convalescentRecovering from illness, injury, or medical treatment.convictTo establish someone's criminal guilt in court.convincePersuade someone to accept an idea or course of action.convivialFriendly and lively in social settings.cooperateTo act together in support of a shared purpose.cooperationWorking together toward a shared purpose.coordinateTo arrange separate things to fit and work well together.coordinationThe arrangement of parts to function harmoniously together.copyA reproduction or close imitation of an original.copyWritten text prepared for publication or advertising.correctIn accordance with an accepted fact or standard.correctionAn adjustment that remedies an error or excess.correctiveIntended to fix a problem, or a measure used to do so.correspondTo match or agree in relevant ways.correspondenceWritten messages exchanged between people.correspondentSomeone who sends written reports or messages.corroborateTo confirm or support with additional evidence.corroborationEvidence or support that confirms a claim or account.corrodeTo gradually wear away or weaken, especially through chemical action.corrosionThe gradual wearing away or weakening of a material, especially metal, through chemical action.corrosiveEating away or destroying material through chemical action.corruptDamaged in integrity so that it is unreliable.corruptibleSusceptible to loss of integrity or soundness.corruptionDeterioration of integrity or sound condition.costThe resources required to obtain or accomplish something.counselGuidance offered to help someone judge or act.countenanceTo accept or allow something.countenanceA person's face or facial expression.cousinA relative connected through a different branch of shared ancestry.coutureHigh-fashion clothing made to order.covenA group of witches who meet to practise witchcraft.covenantA solemn agreement or promise, or to make one.coverTo extend over something so as to include or protect it.coverA new performance of a song previously performed by another artist.discomfitureThe unsettling of someone's confidence or plans.discomfortPhysical or mental unease.inconstantProne to change rather than remain steady or faithful.incontinentUnable to restrain an urge or bodily release.inconvenientCausing trouble or difficulty by being unsuitable for someone's needs.incorrigibleImpossible or very difficult to reform or correct.recompenseSomething given, or the act of giving it, to make up for loss or reward effort.