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

In his first weeks in office, President Donald Trump signed a series of executive orders targeting trans rights, including one stating the U.S. government would recognize only two unchangeable sexes and another barring trans people from military service. —Brooke Sopelsa, NBC news, 13 May 2025

But these unchangeable circumstances don't stop military spouses from taking charge of their own lives. —Grace Harrington, People.com, 9 May 2025

Do Regular Reviews Set consistent operational reviews with unchangeable timing. —Expert Panel®, Forbes.com, 25 Apr. 2025

Nonlinear optical devices must be crafted with a single, unchangeable function determined during fabrication. —The Physics Arxiv Blog, Discover Magazine, 31 Mar. 2025

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for unchangeable

• exchangeable
• changeable
• interchangeable

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