Definition of wiseacre in English:

wiseacre

Syllabification: wise·a·cre
Pronunciation: /ˈwīzˌākər
 
/

noun

A person with an affectation of wisdom or knowledge, regarded with scorn or irritation by others; a know-it-all.
More example sentences
  • For years, successive generations of caddies lived up to their reputation as low-life wiseacres who always knew better than the guy who was paying them and were not afraid to say so.
  • While being no particular fan of cops myself, I sympathise with them when they have to deal with wiseacres like you and your cohorts.
  • Either way, the name stuck - providing great fodder for annoying wiseacres all over the state.

Origin

late 16th century: from Middle Dutch wijsseggher 'soothsayer', probably from the Germanic bases of wit2 and say. The assimilation to acre remains unexplained.

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Word of the day hubris
Pronunciation: ˈ(h)yo͞obris
noun
excessive pride or self-confidence