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adj. pert·er, pert·est
a. High-spirited, lively, or cheerful: A pert receptionist greets each client.
b. Impudently bold; saucy: He was pert to his teacher. She gave a pert answer.
a. Attractive or stylish in appearance: a pert hat.
b. Small or firm and well-formed: a pert nose.
[Middle English, unconcealed, bold, short for apert, obvious, frank (probably influenced by Old French aspert, espert, clever), from Old French, from Latin apertus, open, past participle of aperīre, to open; see wer- in Indo-European roots.]