having an excessively favorable opinion of one's abilities, appearance, etc.

Archaic .

having an opinion.

fanciful; whimsical.

Obsolete . intelligent; clever.

adjective

diffident , humble , meek , modest , self-conscious , shy , timid , unself-confident

adjective

arrogant , bigheaded , big talking , cocky , conceity , full of hot air , gall , ham * , hot stuff , immodest , know-it-all , loudmouth , narcissistic , overweening , phony , puffed up , self-important , smart-alecky , snotty * , stuck up , swollen-headed , vain , vainglorious , windbag * , egoistic , egoistical , egotistical , bombastic , bragging , bumptious , ham , opinionated , pompous , prideful , priggish , proud , self-conceited , smug , snobbish , snooty , whimsical