From Longman Dictionary of Contemporary Englishprimprim /prΙͺm/ adjective1OFFENDvery formal and careful in the way you speak and behave, and easily shocked by anything rude
She looked prim and nervous in her best hat and coat.
a very prim and proper young lady2TIDYprim clothes are neat and formal
a prim suit βprimly adverbExamples from the Corpusprimβ’ Her blushfaded; she made herself prim.β’ a primbouquet of white flowersβ’ Sometimes a student would make a grammaticalerror in the course of an answer and Martinez would counter with a primcorrection.β’ His mouth was set in a prim, painedexpression of disapproval.β’ He had written her several letters, and had had two primreplies.Originprim(1700-1800) Perhaps from Old Frenchprinβexcellent, fineβ, from Latinprimus; β PRIME1