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Definition of unalterable

unalterable

/ʌnˈɔːl.tər.ə.bəl/
un · al · ter · a · ble
Adverb:unalterably
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unalterable Lexical Profile

unalterable Game Scores & Validity

• adjective

1

Not able to be changed, modified, or reversed; fixed and permanent.

Example

"The historical treaty established unalterable borders between the two neighboring territories."

Synonyms
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Antonyms
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• Rhymes for unalterable

• Nearby Words

unallotted
unallowed
unalloyed
unalterable
unalterably
unaltered
unambiguity

Word Origin & Etymology

First recorded in the mid-16th century, formed in English from the negative prefix un- combined with alterable, which derives from Late Latin alterare ('to change'), from Latin alter ('other').

Cite this Entry

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