invariable

American  

[in-vair-ee-uh-buhl] / ɪnˈvɛər i ə bəl /

adjective

1. not variable; not changing or capable of being changed; static or constant.

   Synonyms:

   invariant, changeless, unchanging, unalterable, immutable, unvarying

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noun

1. something that is invariable; a constant.

invariable British  

/ ɪnˈvɛərɪəbəl /

adjective

1. not subject to alteration; unchanging

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noun

1. a mathematical quantity having an unchanging value; a constant

Other Word Forms

• invariability noun
• invariableness noun
• invariably adverb

Etymology

Origin of invariable

late Middle English word dating back to 1400–50; in- ³, variable

Example Sentences

When reporters asked if he had the stamina for another campaign, his invariable response was: “Watch me.”

From Los Angeles Times • Jul. 22, 2024

“The ball will always find you” is not, of course, an invariable truth.

From Seattle Times • Sep. 15, 2023

If legal race reflected invariable biological truths, then why was the definition of legal race so variable?

From Slate • Apr. 30, 2021

As I got to know Lipska, we talked about running a lot, about the invariable torture of the first few miles, and about what makes people keep going.

From Washington Post • Aug. 3, 2018

That is the invariable end of the story—it is never found again.

From "Travels with Charley in Search of America" by John Steinbeck