/wuyz"ay'keuhr/ , n.
1. a person who possesses or affects to possess great wisdom.
2. See wise guy .
[ 1585-95; wijssager prophet, trans. of MHG wissage, late OHG wissago, by popular etym. equiv. to wis wise + sago sayer, from earlier wizzago wise person; c. OE witega, akin to WIT 2 ]