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clueless

[kloo-lis]
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adjective Informal.
  1. ignorant, unaware, or uninformed: I remember thinking my mom was clueless when I was a teenager.
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Origin of clueless

First recorded in 1940–45; clue+ -less
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for clueless

Contemporary Examples

Historical Examples

  • But if you're going to have a jailer, better a clueless one than one who's really on the ball.

    Little Brother

    Cory Doctorow

  • He was fumbling his way along this clueless labyrinth of suppositions when the clock struck twelve.

    Crome Yellow

    Aldous Huxley

  • Many minds, endeavoring to think through the mystifying problems of God's providence, find themselves in a clueless labyrinth.

    The Meaning of Faith

    Harry Emerson Fosdick


British Dictionary definitions for clueless

clueless

adjective
  1. slang helpless; stupid
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for clueless

adj.

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.

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Online Etymology Dictionary, © 2010 Douglas Harper