DictionaryrigidPhysical stiffness
adjective

rigid

RIJ-id/ˈrɪdʒɪd/

Unable to bend readily.

The rigid metal ruler stays straight as someone tries to bend it.

A straight rigid metal ruler resists a person's attempt to bend it, careful realistic hands.
Etymology

Latin rigidus joined physical stiffness with severity. That connection carries into English: a rigid object will not bend, while a rigid person or rule will not yield or adapt.

In context

Old History Nights54:38
A busk was a long, flat piece of wood or bone, slid down the front of the bodice to keep the figure straight and rigid and unbending.
What Queen Elizabeth I's Servants Saw After Dark | History for Sleep

More examples

  • The poster needs a rigid backing to keep it flat.
  • Cold temperatures make the rubber hose more rigid.
  • A rigid brace keeps her wrist from bending.

Forms

rigid · more rigid · most rigid

rigidity noun — The quality of resisting bending or deformation.

Similar words

stiff
Often allows some bending, though only with effort.
inflexible
Emphasizes inability to bend rather than resistance to bending.