prim and proper
prudish, straight-laced
adj
Of a person, their manner or appearance: Formal and precise; stiffly decorous.
Philemon was in great Surprize, And hardly could believe his Eyes, Amaz’d to ſee her look ſo prim; And ſhe admir’d as much at him.
God damn it, what does she want of me, this sad, beautiful bridgeplayer of the Fifth Floor, with her air of lost love and her prim carnality?
Of a person: Prudish; straight-laced.
Of things: Neat; trim.
prim regularity
verb
To make one's expression prim.
To give a prim or demure expression to (one's face, mouth, or (rare) lips).
To dress (one) up affectedly or demurely.
noun
A prim person.