invariable invariability • invariableness · · · Info · Definitions · Synonyms · Antonyms · Characters · · invariable · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a quantity that does not vary. Synonyms: constant, constant quantity. · · Noun Definition 1 (adj) not liable to or capable of change. Synonyms: invariable (vs. variable). Examples: "An invariable temperature." "An invariable rule." "His invariable courtesy." · · Adjective Definition 1 Synonyms · · · constant · · Synonym 1 constant quantity · · Synonym 2 Antonyms · · · changeable · · Antonym 0 uncertain · · Antonym 1 unsettled · · Antonym 2 covariant · · Antonym 3 multivariate · · Antonym 4 protean · · Antonym 5 shifting · · Antonym 6 variant · · Antonym 7 versatile · · Antonym 8 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 v latin small letter v U+0076