Wiseacre

n.	1.
	1.	A learned or wise man. Pythagoras learned much . . . becoming a mighty wiseacre. - Leland.
	2.	One who makes undue pretensions to wisdom; a would-be-wise person; hence, in contempt, a simpleton; a dunce.

Noun

1.

wiseacre - an upstart who makes conceited, sardonic, insolent comments Synonyms: smart aleck, weisenheimer, wise guy, wisenheimer

smart aleck, upstart, weisenheimer, wise guy, wisenheimer