invariable.
Not variable; unalterable; uniform; always having the same value.
Meaning & usage
Not variable; unalterable; uniform; always having the same value.
Constant.
That cannot undergo inflection, conjugation or declension.
The French adjective marron ‘brown’ is invariable: it does not take the usual s in the plural.
Where this word comes from
Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English in- English variable English invariable From in- + variable. Piecewise doublet of unvariable.
Something that does not vary; a constant.
Where this word comes from
Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English in- English variable English invariable From in- + variable. Piecewise doublet of unvariable.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.