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Definitions

unaccustomed

[uhn-uh-kuhs-tuhmd] / ˌʌn əˈkʌs təmd /
ADJECTIVE
not prepared, ready; new
Synonyms
STRONGEST
ignorant uninformed
WEAK
incompetent inexperienced newcome not given to not used to novice too green unacquainted unfamiliar with uninstructed unpracticed unseasoned unskilled untaught untrained unused to unversed in
Antonyms
WEAK
accustomed customary normal prepared ready usual
ADJECTIVE
new, strange
Synonyms
STRONGEST
unfamiliar
WEAK
alien altered bizarre different eccentric exceptional exotic foreign imported novel out of the ordinary outlandish quaint remarkable singular special surprising uncommon unconventional uncustomary unexpected unknown unorthodox unprecedented unusual unwonted variant
Antonyms
WEAK
accustomed customary normal prepared ready usual

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.

One of Luna’s friends, unaccustomed to the social boundaries of a more analog era, called 17 times in a day.

From The Wall Street Journal • Apr. 6, 2026

Tennessee, Texas, Mississippi and Louisiana -- southern states unaccustomed to intense winter weather and the bone-chilling cold that's forecast to continue for much of the next week -- were especially impacted.

From Barron's • Jan. 26, 2026

For Sarah, a 34-year-old marketer in Michigan, the summer of 2022 was a season flush with unaccustomed success.

From The Wall Street Journal • Nov. 28, 2025

In among Liverpool's strife, Szoboszlai has been one of the better performers - but yet again he was pushed into an unaccustomed right-back role against Forest.

From BBC • Nov. 25, 2025

He had a wide smile and was taller and thinner than I’d imagined he’d be—a man who was clearly not much of an eater, who also looked fully unaccustomed to wearing business clothes.

From "Becoming" by Michelle Obama