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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.

Unaccustomed to being contradicted by soldiers, Issa spun around.

From The Wall Street Journal • Mar. 12, 2026

Unaccustomed to the sounds of artillery, she said, she expected to be hit after every blast.

From New York Times • Feb. 18, 2023

Unaccustomed to such remarks from an ambassador of a close ally, the German government formally asked the U.S. government for clarification.

From Los Angeles Times • Feb. 25, 2020

Unaccustomed to philanthropic feasts on the part of a municipal employee, the first time she put out food on Halloween 2015, students asked how much it cost to take a soda.

From Washington Times • Jun. 21, 2019

Unaccustomed to such strenuous labor, they would stop digging as they pleased, basking in the sun until they were trodden on by columns of marching rats.

From "Redwall" by Brian Jacques