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Definition of alter

alter

/ˈɔːl.tɚ/
al · ter
Adjective:alterable
•
Past Simple:altered
•
Past Participle:altered
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Present Participle:altering
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alter Lexical Profile

alter Game Scores & Validity

• verb

1

To change or cause to change in character, composition, or appearance, typically in a relatively small but significant way.

Example

"The city council voted to alter the zoning laws to allow more mixed-use developments."

2

To tailor or adjust a garment so that it fits better.

Example

"She had her wedding dress altered by a professional seamstress before the ceremony."

3

North American To surgically neuter or spay a domestic animal.

Example

"The animal shelter requires that all adopted pets be altered before going to their new homes."

Synonyms
View all synonyms for alter
Antonyms
View all antonyms for alter

Word Nuance & Usage

Do not confuse 'alter' (a verb meaning to change or modify) with its homophone 'altar' (a noun referring to a raised table or platform used in religious ceremonies).

• Rhymes for alter

• Nearby Words

altamaha
altar
altarpiece
alter
alterable
alteration
altercation

Word Origin & Etymology

Borrowed in the late 14th century from Old French 'alterer', from Medieval Latin 'alterare' ('to change'), derived from Latin 'alter' meaning 'the other (of two)'.

Cite this Entry

Wordmom. (2026). Definition of Alter. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/alter
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