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monomaniac

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌmɒnəʊˈmeɪnɪæk/US:USA pronunciation: IPAUSA pronunciation: IPA/ˌmɑnəˈmeɪniˌæk/


WordReference Random House Learner's Dictionary of American English © 2026
mon•o•ma•ni•a /ˌmɑnəˈmeɪniə, -ˈmeɪnyə/USA pronunciation   n. [uncountable]
  1. an overwhelming interest or zeal in a single thing:The captain's monomania was authority.
mon•o•ma•ni•ac /ˌmɑnəˈmeɪniˌæk/USA pronunciation  n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2026
mon•o•ma•ni•a  (mon′ə mānē ə, -mānyə),USA pronunciation n. 
  1. (no longer in technical use) a psychosis characterized by thoughts confined to one idea or group of ideas.
  2. an inordinate or obsessive zeal for or interest in a single thing, idea, subject, or the like.
  • Neo-Latin; see mono-, -mania
  • 1815–25;

'monomaniac' also found in these entries (note: many are not synonyms or translations):

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