UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈwɪərdəʊ/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈwɪrdoʊ/ ,USA pronunciation: respelling(wērdō)

Inflections of 'weirdo' (nnoun: Refers to person, place, thing, quality, etc.): nplplural noun: Noun always used in plural form--for example, "jeans," "scissors.": weirdos

WordReference Random House Learner's Dictionary of American English © 2020
weird•o /ˈwɪrdoʊ/USA pronunciation   n.[countable]pl.  -os. [Slang.]
  1. Informal Termsan odd, strange, or abnormal person.

WordReference Random House Unabridged Dictionary of American English © 2020
weird•o  (wērdō),USA pronunciation n., pl.  weird•os. [Informal.]
  1. Informal Termsan odd, eccentric, or unconventional person.
  2. Informal Termsa psychopath, esp. a dangerous or vicious one;
    psycho:They caught the weirdo who attacked the children.
  • weird + -o 1950–55

Collins Concise English Dictionary © HarperCollins Publishers::
weirdo /ˈwɪədəʊ/, weirdie /ˈwɪədɪ/ n ( pl -dos, -dies)
  1. informal a person who behaves in a bizarre or eccentric manner
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