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isn't

American  
[iz-uhnt] / ˈɪz ənt /
  1. contraction of is not.


isn't British  
/ ˈɪzənt /

contraction

  1. is not

"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

Pronunciation

Isn't is often pronounced in the South Midland and Southern U.S., with , a stop consonant, substituting for , a sibilant. This substitution results from an assimilatory process in which the tip of the tongue, in anticipation of the articulatory position for the following , touches the upper alveolar ridge. This same process gives for wasn't and for business. These pronunciations are heard from speakers on all social levels.

Usage

See contraction.

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:

“People are realizing Muse isn’t a chatbot,” and therefore the market is starting to understand that agentic workloads are different from those for AI-driven searches and conversations, O’Regan said in a note to clients.

From MarketWatch Sep. 21, 2026

Good AI isn’t a respecter of human taboos.

From The Wall Street Journal Sep. 21, 2026

Burnham told reporters that in the first phone call between the pair, he told the president: "Manchester isn't 'some town'…this is Manchester".

From BBC Sep. 21, 2026

By the end of “Estrus,” it’s apparent that the tug-of-war between her body and mind isn’t over.

From Los Angeles Times Sep. 21, 2026

It’s a good thing the bottle in my hand isn’t a real firecracker, because the way she jerks her foot back and props herself up on her elbows would’ve set it off.

From "Red Flags and Butterflies" by Sheryl Azzam

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