Definition of clueless
1 : having or providing no clue <a clueless case for the police to solve>
2 : completely or hopelessly bewildered, unaware, ignorant, or foolish <clueless about what they want>
Examples of clueless in a sentence
When it comes to computers, I'm clueless.
They were clueless about what to do.
First Known Use of clueless
CLUELESS Defined for English Language Learners
Definition of clueless for English Language Learners
: not having knowledge about something : unable to understand something
Seen and Heard
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