Dictionary.com

invariable

[ in-vair-ee-uh-buhl ]
/ ɪnˈvɛər i ə bəl /
Save This Word!
See synonyms for: invariable / invariability / invariably on Thesaurus.com

adjective
not variable; not changing or capable of being changed; static or constant.
noun
something that is invariable; a constant.
QUIZ
QUIZ YOURSELF ON "IS" VS. "ARE"
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?

Origin of invariable

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

OTHER WORDS FROM invariable

in·var·i·a·bil·i·ty, in·var·i·a·ble·ness, nounin·var·i·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use invariable in a sentence

British Dictionary definitions for invariable

invariable
/ (ɪnˈvɛərɪəbəl) /

adjective
not subject to alteration; unchanging
noun
a mathematical quantity having an unchanging value; a constant

Derived forms of invariable

invariability or invariableness, noun
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
FEEDBACK