wiseacre

[wahyz-ey-ker] /ˈwaɪzˌeɪ kər/
noun
1.
a person who possesses or affects to possess great wisdom.
2.
Origin
1585–95; < Middle Dutch wijssager prophet, translation of Middle High German wīssage, late Old High German wīssago, by popular etymology equivalent to wīs wise + sago sayer, from earlier wīzzago wise person; cognate with Old English wītega, akin to wit2
British Dictionary definitions for wise-acre
wiseacre (ˈwaɪzˌeɪkə)
 
n
1.  a person who wishes to seem wise
2.  a wise person: often used facetiously or contemptuously
 
[C16: from Middle Dutch wijsseggher soothsayer; related to Old High German wīssaga, German Weissager. See wise1, say]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin and History for wise-acre
wiseacre
1595, partial translation of M.Du. wijssegger "soothsayer" (with no derogatory connotation), probably altered by association with M.Du. segger "sayer" from O.H.G. wizzago "prophet," from wizzan "to know," from P.Gmc. *wit "know." The depreciatory sense of "one who pretends to know everything" may have come through confusion with obsolete Eng. segger "sayer," which also had a sense of "braggart" (c.1440).
Online Etymology Dictionary, © 2010 Douglas Harper
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Tile value for wise

7
7
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