a person who makes annoyingly conceited claims to knowledge
Origin of wiseacrealtered by folk etymology ; from Middle Dutch wijssegger, altered (infl. by wijs, wise + zeggen, to say) ; from Old High German wissago, altered (infl. by wis, wise + sago, speaker ; from sagen, to say) ; from wizzago, prophet ; from Germanic an unverified form witag-, knowing: for Indo-European base see wise
A person regarded as being disagreeably egotistical and self-assured.
Origin of wiseacreAlteration by folk etymology from Middle Dutch wijsseggher, soothsayer, translation of Middle High German w&imacron;ssage, from Old High German w&imacron;ssago, seer, alteration (influenced by forasago, sayer beforehand, prophet) of w&imacron;zago, from w&imacron;zag, knowledgeable; see weid- in Indo-European roots.
a 1600, from Middle Dutch wijssegger (“soothsayer"), from Old High German wÄ«zzago, from wizzan (“to know")