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Definitions

alter

[awl-ter] / ˈɔl tər /




Usage

What is another way to say alter? To alter is to make some partial change, as in appearance, while still preserving the identity: to alter a dress, as by raising the hem (to change a dress would mean to put on a different one). To change is to make a material difference so that something is distinctly different from what it was: to change one's opinion. 

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.

It’s done at the state level, and Congress can legislate to alter the time, place, and manner of elections.

From Slate • Apr. 15, 2026

They help scientists understand how often black holes switch between active and quiet states, how jets change as they age, and how surrounding environments can alter the structure of entire galaxies.

From Science Daily • Apr. 13, 2026

But those against say large-scale mining could alter the flow of rivers coming from the Andes mountains and threaten water security for millions.

From BBC • Apr. 10, 2026

It can also alter polar and tropical jet streams, sending storms on a path through Southern California and the southern United States, experts say.

From Los Angeles Times • Apr. 9, 2026

In that instant, as Daugherty sized up Harding, an idea came to him that would alter American history: Wouldn’t that man make a great President?

From "Blink" by Malcolm Gladwell




Vocabulary lists containing alter