unalterable

1 of 2

adjective

un·​al·​ter·​able ˌən-ˈȯl-t(ə-)rə-bəl 

: not capable of being altered or changed

an unalterable resolve

unalterable hatred

unalterability

ˌən-ˌȯl-t(ə-)rə-ˈbi-lə-tē 

noun

unalterableness

ˌən-ˈȯl-t(ə-)rə-bəl-nəs 

noun

unalterably

ˌən-ˈȯl-t(ə-)rə-blē 

adverb

unalterability

2 of 2

noun

un·​alterability "+ 

: inalterability

Synonyms of unalterable

Adjective

• unchangeable

Examples of unalterable in a Sentence

Adjective

the rules of the game are unalterable, regardless of who is playing

Recent Examples on the Web

Adjective

Apple Reference Image provides users with unalterable reference photos, visually confirming what the sensor saw at the moment of capture. — David Ingram, NBC news, 9 Sep. 2026

Plus, for those concerned about authenticity in the age of AI, a Reference mode will now sign the sensor data to create an unalterable reference image, viewable in the Photos app. — Michael Kan, PC Magazine, 9 Sep. 2026

Trust is rebuilt through continuous, unalterable telemetry, not manual audits. — Expert Panel®, Forbes.com, 29 June 2026

Biometric data like fingerprints, voices, retina scans or facial features are unique to each person and unalterable. — The Editorial Board, Chicago Tribune, 19 Jan. 2026

Word History

First Known Use

Adjective

circa 1605, in the meaning defined above

Rhymes for unalterable

• alterable

Kids Definition

unalterable

adjective

un·​al·​ter·​able ˌən-ˈȯl-t(ə-)rə-bəl 

ˈən-

: not capable of being altered or changed

unalterable opposition

unalterably

-blē 

adverb