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Synonyms

clueless

American  
[kloo-lis] / ˈklu lɪs /

adjective

Informal.
  1. ignorant, unaware, or uninformed.

    I remember thinking my mom was clueless when I was a teenager.


clueless British  
/ ˈkluːlɪs /

adjective

  1. slang helpless; stupid

"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

Etymology

Origin of clueless

First recorded in 1940–45; clue + -less

Explanation

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.

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Vocabulary lists containing clueless

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For Tunstall, what sets Clueless apart from traditional rom-coms and high school dramas is that there isn't a typical villain and there's no nastiness or bad intentions from the main characters.

From BBC • Mar. 14, 2025

I'm here for the fashion, but there's so much more to Clueless.

From BBC • Feb. 9, 2025

Besides, it’ll trigger the “h” word from Clueless Girlfriend: hoax.

From Los Angeles Times • Nov. 27, 2024

Clueless in Manhattan: “How very kind of that young man to squeegee-clean my car window!”

From Washington Post • Nov. 3, 2022

Aimee had been too young to see the movie Clueless when it first came out in theaters, but she had seen it several times since then, and she owned the video tape.

From "Nine, Ten: A September 11 Story" by Nora Raleigh Baskin

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