1
overconfident(certain, sure, arrogant, haughty, self-assured)
1
peremptory(aloof, pretentious, haughty, cavalier, conceited)
1
pert
1
scornful(aloof, pretentious, haughty, cavalier, conceited)
1
smug(fresh, aloof, pretentious, arrogant, brash)
1
snooty(fresh, aloof, pretentious, arrogant, proud)
1
snotty(adjective, fresh, aloof, pretentious, arrogant)
1
strutter(noun, brag, peacock, braggart, hotshot)
1
stuck up(expression, aloof, pretentious, arrogant, cavalier)
1
supercilious(aloof, pretentious, haughty, cavalier, conceited)
1
trumpeter(noun, brag, peacock, braggart, hotshot)
1
uppity(adjective, fresh, aloof, pretentious, arrogant)
1
vain(certain, aloof, sure, pretentious, arrogant)
1
vaunter(noun, braggart)
1
wise-ass(noun, smarty, malapert, wiseacre, smart-ass)
1
wisehead
0
aggressively self-confident
0
aloof(pretentious, vain, haughty, cavalier, conceited)
0
bag of wind(noun, expression, idiom, fool, bore)
0
bragger(noun, fool, bore, brag, peacock)
11 years ago|9k views|share |citing 
APASmart Define. (2015). know-it-all thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/know-it-all/thesaurus/synonyms
ChicagoSmart Define. 2015. "know-it-all thesaurus" https://smartdefine.org/know-it-all/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, know-it-all thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/know-it-all/thesaurus/synonyms>.
MLASmart Define. "know-it-all thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/know-it-all/thesaurus/synonyms>