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Synonyms

unused

American  
[uhn-yoozd, uhn-yoost] / ʌnˈjuzd, ʌnˈjust /

adjective

  1. not used; not put to use.

    an unused room.

  2. never having been used.

    an unused postage stamp.

  3. not accustomed.

    unused to cold winters.


unused British  

adjective

  1. not being or never having been made use of

  2. not accustomed or used (to something)

"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

Etymology

Origin of unused

Middle English word dating back to 1250–1300; see origin at un- 1, used

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:

By the time the bubble burst, the industry was sitting on huge amounts of unused “dark fiber,” which collapsed prices and crushed heavily indebted operators.

From MarketWatch Aug. 10, 2026

The HPS fund’s earlier first-quarter report showed $4.9 billion in unused credit as of March 31, but only $3.4 billion was actually available to borrow.

From The Wall Street Journal Aug. 9, 2026

When Saint Mary’s dropped its football program, he called the East Bay school not only to recruit players but to round up equipment that would otherwise go unused.

From Los Angeles Times Aug. 5, 2026

He largely featured for the under-21s last season, but was an unused substitute in a 2-0 win over Norwich City in the Championship.

From BBC Aug. 4, 2026

I think of Madoc’s grim expression, jaw locked, doubtlessly unused to children, no less human ones.

From "The Cruel Prince" by Holly Black

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