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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.

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

Kay said she was also concerned about the presence of adverts on some newer, discounted Kindle devices, and how these might alter the reading experience.

From BBC • Apr. 9, 2026

But the 2022 energy shock in Europe didn’t much alter the growth trajectory of wind and solar power, despite many policy announcements.

From The Wall Street Journal • Apr. 9, 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

He'd stopped trying to alter the world with his gift.

From "A Wish in the Dark" by Christina Soontornvat




Vocabulary lists containing alter