Dictionary.com
Thesaurus.com
Synonyms

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

noun

  1. something that is invariable; a constant.

invariable British  
/ ɪnˈvɛərɪəbəl /

adjective

  1. not subject to alteration; unchanging

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of invariable

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

Explanation

Use the adjective invariable to describe something that's unlikely to change, such as your invariable custom of eating deep-dish pizza every Saturday. You can hear the word vary in invariable. Something that varies changes or is made up of different kinds of things. When you add the prefix in-, meaning "not," and the adjective suffix -able, you get an adjective to describe something that's not able to vary or change. Synonyms for invariable include constant, fixed, and immutable. Someone who's invariable in her habits may seem predictable and boring on the one hand, and steady and reliable on the other.

Keep Reading on Vocabulary.com

Vocabulary lists containing invariable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

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

Within the shift of generations is the invariable passing of roles from one dancer to the next, and what is vividly apparent is that these ballets were made on specific people.

From New York Times Mar. 2, 2022

The names on the list are invariable, so if you are in the North Pacific, every sixth year the first named storm will be named, for example, Adrian.

From Slate Jul. 19, 2017

The invariable reaction to a scene with Gebu had begun to set in, a fatigue so deep it penetrated mind and body alike.

From "The Golden Goblet" by Eloise Jarvis McGraw

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training