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Synonyms

unaccustomed

American  
[uhn-uh-kuhs-tuhmd] / ˌʌn əˈkʌs təmd /

adjective

  1. not accustomed or habituated.

    to be unaccustomed to hardships.

  2. unusual; unfamiliar.

    A brief after-dinner speech is an unaccustomed pleasure.

    Synonyms:
    unexpected, peculiar, curious, extraordinary, uncommon

unaccustomed British  
/ ˌʌnəˈkʌstəmd /

adjective

  1. (foll by to) not used (to)

    unaccustomed to pain

  2. not familiar; strange or unusual

"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

Other Word Forms

Etymology

Origin of unaccustomed

First recorded in 1520–30; un- 1 + accustomed

Explanation

If you're unaccustomed to something, you're not used to it. When you're unaccustomed to riding a horse, it might take a while to get the hang of staying in the saddle. An unaccustomed knock on the door might startle you and make your dog bark in alarm, and an unaccustomed bonus in your paycheck will come as a happy surprise. You might feel awkward having tea with a princess in a palace if you're unaccustomed to fine dining and dignified table manners. The prefix un here means "not," and it's combined with accustom, with its ultimate Latin root word consuetudinem, "habit, usage, practice, or custom."

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Vocabulary lists containing unaccustomed

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.

See Examples For:

It is also stretching the region’s infrastructure, power grids and an economy unaccustomed to mass tourism, at a time it is also grappling with the threat of wildfires.

From The Wall Street Journal Aug. 12, 2026

The rally has also exposed structural vulnerabilities in a Korean stock market unaccustomed to wild swings.

From The Wall Street Journal Jun. 29, 2026

"Feeling threatened by anyone who is different, we grow unaccustomed to encounters and dialogue. In this way polarisation, conflict, fear and violence spread."

From BBC Apr. 17, 2026

NWS meteorologist Allison Santorelli told AFP the agency was seeing widespread reports of significant ice accumulation, including in places unaccustomed to severe winter weather.

From Barron's Jan. 26, 2026

I knew them, of course, the monks in the dust cloud chasing after me, swinging their old swords in the air in the manner of those unaccustomed to sword-swinging.

From "The Many Assassinations of Samir, the Seller of Dreams" by Daniel Nayeri

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