unchangeable

adjective

un·​change·​able ˌən-ˈchān-jə-bəl 

: not changing or to be changed : immutable

unchangeable documents

unchangeable facts

unchangeability

ˌən-ˌchān-jə-ˈbi-lə-tē 

noun

unchangeableness

ˌən-ˈchān-jə-bəl-nəs 

noun

unchangeably

ˌən-ˈchān-jə-blē 

adverb

Synonyms

• fixed
• hard-and-fast
• immutable
• inalterable
• incommutable
• inflexible
• invariable
• unalterable

Examples of unchangeable in a Sentence

I'm afraid that my opinion on this matter is unchangeable.

Recent Examples on the Web

Given that dApps and smart contracts are unchangeable, extensive pre-launch testing and the development of new QA approaches specifically designed for Web 3.0. are necessary. —Dzmitry Lubneuski, Forbes, 27 Sep. 2024

Your ex-wife’s will and trust is an unchangeable document. —Eric Thomas, Sun Sentinel, 3 Aug. 2024

But Of Empires and Citizens does capture something important about a bygone era of anti-Americanism rooted in the seemingly unchangeable patterns of an American imperium and the compliant dictators who abetted it. —Marc Lynch, Foreign Affairs, 3 Apr. 2013

Bob Dylan’s height is five foot seven, while Timothée Chalamet’s height is an unchangeable five ten. —Elizabeth Logan, Glamour, 24 July 2024

Word History

First Known Use

14th century, in the meaning defined above

Kids Definition

unchangeable

adjective

un·​change·​able ˌən-ˈchān-jə-bəl 

: not changing or to be changed : immutable

unchangeable facts

unchangeableness noun

unchangeably

-blē 

adverb