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Synonyms

unenthusiastic

British  
/ ˌʌnɪnθjuːzɪˈæstɪk /

adjective

  1. lacking in enthusiasm

"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

Explanation

Whether it's a boring class, an unappealing chore, or a dull event, if you're not looking forward to it and show little interest or happiness toward it, then you're unenthusiastic. The word unenthusiastic describes a lack of excitement or interest. If someone’s unenthusiastic, they’re not really into what’s happening—like when you give a half-hearted cheer at a game because you don’t really care who wins. This word is often used when reactions feel flat or forced, as if the person would rather be doing something more fun. Being unenthusiastic means you’re not feeling the energy or passion, and it’s pretty clear you’re not enjoying whatever’s going on.

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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.

Jose Diego had been unenthusiastic about wife Renee Dominguez’s suggestion that they take up cycling to break him out of his sedentary ways.

From Los Angeles Times • May 1, 2026

He was unenthusiastic about prospects for the U.S.

From The Wall Street Journal • Mar. 10, 2026

The unenthusiastic market response to the trial appears to be related to the high proportion of patients who dropped out of the study after experiencing side effects.

From Barron's • Dec. 11, 2025

Chris, who now runs UK indie studio Sidequest Ninja, says that in his experience smaller developers are generally unenthusiastic about using generative AI.

From BBC • Jul. 15, 2024

As he was in London, he is in Paris, unenthusiastic, apathetic.

From "Vincent and Theo: The Van Gogh Brothers" by Deborah Heiligman

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