[kloo-lis] /ˈklu lɪs/

adjective, Informal.
ignorant, unaware, or uninformed:
I remember thinking my mom was clueless when I was a teenager.
(slang) helpless; stupid

1862, “trackless,” from clue (n.) + -less. Meaning “ignorant, uninformed” is from 1943, said to be RAF slang from 1930s. Student slang use by 1985 is perhaps an independent extension along the same line. Related: Cluelessly; cluelessness.


Ignorant; hopelessly unaware: We’ll have to endure loads of clueless reporters raving on/ You’re probably just a clueless newbie

Related Terms

totally clueless

[1980s+ Students & 1930s+ Royal Air Force; perhaps a revival, perhaps a new coinage]


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  • Cluelessness

    noun Total stupidity or ignorance: cluelessness in that department

  • Cluing

    [kloo] /klu/ noun 1. anything that serves to guide or direct in the solution of a problem, mystery, etc. 2. (defs 1–4, 6, 12). verb (used with object), clued, cluing. 3. to direct or point out by a clue. 4. (def 7). Verb phrases 5. clue in, /kluː/ noun 1. something that helps to solve […]

  • Cluj

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