unavailability unautumnal • unavailable · · · Info · Definitions · Synonyms · Antonyms · Characters · · unavailability · · Text Latin · · Script 14 · · Length 7 · · Syllables Definitions · · · (noun) the quality of not being available when needed. Synonyms: inaccessibility. · · Noun Definition 1 Synonyms · · · inaccessibility · · Synonym 1 Antonyms · · · handiness · · Antonym 0 accessibility · · Antonym 1 availability · · Antonym 2 availableness · · Antonym 3 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076 y latin small letter y U+0079