cocky/cocksure

ADJECTIVE

self-assured, full of oneself

Synonyms

WEAK

arrogant brash bumptious certain conceited confident egotistical hotdogging hotshot hubristic know-it-all lordly nervy overconfident overweening positive presumptuous self-confident smart aleck smart guy smarty smarty pants sure swaggering swollen-headed vain wise guy

Antonyms

WEAK

humble modest uncertain unself-confident unsure