D defs.my
Entry 2 senses Webster, 1913

Wiseacre

· Wise·a·cre · IPA /ˈwaɪzeɪkə(ɹ)/
01 n. A learned or wise man.
  1. 1.
    A learned or wise man.[Obs.]
    “Pythagoras learned much . . . becoming a mighty wiseacre.” — Leland.
  2. 2.
    One who makes undue pretensions to wisdom; a would-be-wise person; hence, in contempt, a simpleton; a dunce.