lightheartedness lightheartedly • lighthouse · · · Info · Definitions · Synonyms · Characters · · lightheartedness · · Text Latin · · Script 16 · · Length Definitions · · · (noun) the cheerful feeling you have when nothing is troubling you. Synonyms: carefreeness, insouciance, lightsomeness. · · Noun Definition 1 Synonyms · · · carefreeness · · Synonym 1 insouciance · · Synonym 2 lightsomeness · · Synonym 3 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 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 s latin small letter s U+0073 t latin small letter t U+0074