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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.

Some schools in the U.S. still have a few days left before summer vacation, but that isn’t stopping Walmart from touting deals on back-to-school dorm furniture and electronics.

From The Wall Street Journal • Jun. 21, 2026

It's not the first time the US trillionaire has waded into UK politics and he isn't universally welcomed when he does.

From BBC • Jun. 20, 2026

"With fibromyalgia, there isn't much understanding of what the pain state is, and there are not a lot of great options for treating it," Streicher said.

From Science Daily • Jun. 20, 2026

The small, colorful board book isn’t the typical banned book, mostly because parents are usually either doing or directing the reading.

From Salon • Jun. 20, 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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