Definition of


  1. (noun, person) someone (especially a woman) who annoys people by constantly finding fault
  2. (noun, animal) an old or over-worked horse
  3. (verb, communication) bother persistently with trivial complaints
  4. (verb, emotion) worry persistently
  5. (verb, cognition) remind or urge constantly

via WordNet, Princeton University

Origin of the word Nag

  1. "annoy by scolding," 1828, originally a dialectal word, probably ultimately from a Scand. source (cf. O.N. gnaga "to complain," lit. "to bite, gnaw," dial. Swed. and Norw. nagga "to gnaw") related to O.E. gnagan "to gnaw" (see gnaw). more
  2. "old horse," c.1400, nagge "small riding horse," of unknown origin, perhaps related to Du. negge, neg (but these are more recent than the Eng. word). Term of abuse is a transferred sense, first recorded 1598. more

via Online Etymology Dictionary, ©2001 Douglas Harper

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