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Synonyms

unfamiliar

American  
[uhn-fuh-mil-yer] / ˌʌn fəˈmɪl jər /

adjective

  1. not familiar; not acquainted with or conversant about.

    to be unfamiliar with a subject.

  2. different; unaccustomed; unusual; strange.

    an unfamiliar treat.

    Synonyms:
    new, novel, curious

unfamiliar British  
/ ˌʌnfəˈmɪljə, ˌʌnfəˌmɪlɪˈærɪtɪ /

adjective

  1. not known or experienced; strange

  2. not familiar

"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 unfamiliar

First recorded in 1585–95; un- 1 + familiar

Explanation

Unfamiliar things are unknown or unexplored. On your first day at a new school, every single face you see is unfamiliar. Traveling in an unfamiliar city is easier with a map or a GPS, and meeting the unfamiliar people who live there is easier if you speak at least a few words of their language. Some people love eating unfamiliar food — things they've never tasted before — while others aren't fond of it. When something (or someone) is familiar, it's known to you — the word shares a Latin root with family. Add the "not" prefix un-, and you've got unfamiliar.

Keep Reading on Vocabulary.com

Vocabulary lists containing unfamiliar

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:

Casey and Gen’s journey from competitors to confidantes is the film’s familiar emotional center, but tucked into an unfamiliar narrative.

From Salon Aug. 18, 2026

"Where I went was unfamiliar to me, it was like nowhere I'd ever been before, and there were practices and behaviours that were completely alien to me," he added.

From BBC Aug. 15, 2026

Leaving London behind meant finding housing in an unfamiliar new land and a means of earning a living.

From The Wall Street Journal Aug. 14, 2026

Ediacaran organisms came in many unfamiliar forms, including flat discs, leafy shapes, and ribbed ovals.

From Science Daily Aug. 6, 2026

A pang of some unfamiliar feeling poked at her insides, someplace not too distant from her heart.

From "The Hidden Gallery" by Maryrose Wood

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