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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:

Using heat pumps for climate control isn’t new.

From The Wall Street Journal ● Oct. 18, 2026

"They've scored the most goals overall and kept the joint-most goals out, so that's a good start for any team to do well, isn't it?!"

From BBC ● Oct. 18, 2026

Tesla’s impressive flying Roadster isn’t about building cars at all.

From Barron's ● Oct. 18, 2026

“It’s a really big piece that isn’t talked about as much because it’s after the flames are out,” he said.

From Los Angeles Times ● Oct. 18, 2026

His statement should be comforting, but it isn’t.

From "Split the Sky" by Marie Arnold

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