inanition inanimation • inanity · · · Info · Definitions · Synonyms · Characters · · inanition · · Text Latin · · Script 9 · · Length Definitions · · · (noun) weakness characterized by a lack of vitality or energy. Synonyms: lassitude, lethargy, slackness. · · Noun Definition 1 (noun) exhaustion resulting from lack of food. · · Noun Definition 2 Synonyms · · · lassitude · · Synonym 1 lethargy · · Synonym 2 slackness · · Synonym 3 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074