fleetingness fleetingly • fleetings · · · Info · Definitions · Synonyms · Characters · · fleetingness · · Text Latin · · Script 12 · · Length Definitions · · · (noun) the property of lasting for a very short time. Synonyms: ephemerality, ephemeralness. · · Noun Definition 1 Synonyms · · · ephemerality · · Synonym 1 ephemeralness · · Synonym 2 Characters · · e latin small letter e U+0065 f latin small letter f U+0066 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074