American English

Definition of prim adjective from the Oxford Advanced American Dictionary

     

    prim

     adjective
    adjective
    NAmE//prɪm//
     
    (primmer, primmest) (disapproving)
     
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  1. 1 (of a person) always behaving in a careful and formal way, and easily shocked by anything that is offensive You can't tell her that joke—she's much too prim and proper.
  2. 2formal and neat synonym demure a prim suit with a high-necked collar
 
adverb “You're not supposed to say that,” she said primly.
See the Oxford Advanced Learner's Dictionary entry: prim