adjective / verb
prim
PRIM/prɪm/
Marked by tightly controlled, excessively proper behavior.
The prim older adult sits rigidly, disapproving of the muddy footprints.

Etymology
The word first described assuming a formal, precise manner—the behavior behind today's adjective. Its origin is uncertain, though French prim, 'fine, delicate,' has been suggested as a source.
In context
a prim and proper princess
More examples
- Her prim manners make even a casual lunch feel formal.
- He gives a prim little cough when someone swears.
- She prims her lips at his rude remark.
Forms
prim · primmer · primmest · prims · primmed · primming
primly adverb — In a stiffly proper manner.
primness noun — The quality of being excessively proper.
Similar words
- prissy
- Emphasizes fussy delicacy as well as excessive propriety.
- prudish
- Focuses on excessive modesty, especially about sexual matters.
- stuffy
- Emphasizes dull formality and resistance to relaxed behavior.