1. (a.) Not pertinent; not pertaining to the matter in hand; having no bearing on the subject; not to the point; irrelevant; inapplicable.
2. (a.) Contrary to, or offending against, the rules of propriety or good breeding; guilty of, or prone to, rude, unbecoming, or uncivil words or actions; as, an impertinent coxcomb; an impertinent remark.
3. (a.) Trifling; inattentive; frivolous.
4. (n.) An impertinent person.
Thesaurus Entries
adrift, arrogant, audacious, beside the mark, beside the point, beside the question, biggety, bluff, bold, brash, brassy, brazen, bumptious, busy, busybody, challenging, cheeky, chutzpadik, cocky, contemptuous, crusty, daring, defiant, defying, derisive, discourteous, disdainful, disregardful, disrespectful, extraneous, extrinsic, facy, flip, flippant, foreign, forward, fresh, gally, gratuitous, greatly daring, immaterial, impolite, impudent, inadmissible, inapplicable, inapposite, inappropriate, incidental, inconsequent, inquisitive, insolent, interfering, intrusive, irrelative, irrelevant, malapert, meddlesome, meddling, nervy, nihil ad rem, nonessential, nosy, not at issue, obtrusive, off the subject, offensive, officious, out-of-the-way, parenthetical, pert, presumptuous, prying, pushing, pushy, regardless of consequences, rude, sassy, saucy, self-appointed, smart, smart-alecky, smart-ass, snoopy, uncalled-for, uncivil, unessential, wise-ass
