SKIP TO CONTENT

clueless

/ˈkluləs/
/ˈklulɪs/
IPA guide

Other forms: cluelessly

Someone is clueless if they have no idea what's happening. The unsuspecting victim of a practical joke is usually clueless right up until everyone starts laughing.

You could reassure your brother that your mom has no idea you're planning a surprise party by saying, "Don't worry, she's totally clueless." Or you might worry that your friend failed the big geometry test, based on the clueless expression on his face during the exam. In the 1860s, clueless meant "leaving no clues behind," but by 1943 it gained its current meaning, which became even more popular as student slang in the 1980s.

Definitions of clueless
  1. adjective
    totally uninformed about what is going on; not having even a clue from which to infer what is occurring
    synonyms:
    uninformed
    not informed; lacking in knowledge or information
Pronunciation
US
/ˈkluləs/
UK
/ˈklulɪs/
Cite this entry
Style:
MLA
  • MLA
  • APA
  • Chicago

Copy citation
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘clueless'. Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors. Send us feedback
Word Family