1. (adj) impertinent, irreverent, pert, saucy
characterized by a lightly pert and exuberant quality
Synonyms: immaterial, irreverent, impudent, godless, sassy, overbold, orthogonal, wise, impertinent, smart, saucy, extraneous, fresh, pert
Antonyms: spiritless, relevant, backward
2. (adj) extraneous, immaterial, impertinent, orthogonal
not pertinent to the matter under consideration
Synonyms: pert, nonmaterial, wise, incorporeal, overbold, smart, rectangular, fresh, immaterial, outside, foreign, irreverent, saucy, orthogonal, impudent, sassy, impertinent, indifferent, extraneous, external
Antonyms: relevant, backward, spiritless
3. (adj) fresh, impertinent, impudent, overbold, smart, saucy, sassy, wise
improperly forward or bold
Synonyms: invigorated, wise, flip, chic, brisk, saucy, heady, new, pert, wise(p), smart, sassy, overbold, judicious, orthogonal, irreverent, clean, insolent, sweet, immaterial, impertinent, fresh, snotty-nosed, knowing, reinvigorated, impudent, novel, refreshing, refreshful, unused, voguish, tonic, refreshed, bracing, wise to(p), extraneous, unfermented, bright
Antonyms: spiritless, backward, relevant
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Synonyms and Antonyms of impertinent 
