placidity placid-mannered • placidly · · · Info · Definitions · Synonyms · Characters · · placidity · · Text Latin · · Script 9 · · Length 4 · · Syllables Definitions · · · (noun) a feeling of calmness; a quiet and undisturbed feeling. Synonyms: placidness. · · Noun Definition 1 (noun) a disposition free from stress or emotion. Synonyms: repose, quiet, serenity, tranquillity, tranquility. · · Noun Definition 2 Synonyms · · · placidness · · Synonym 1 repose · · Synonym 2 quiet · · Synonym 3 serenity · · Synonym 4 tranquillity · · Synonym 5 tranquility · · Synonym 6 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 i latin small letter i U+0069 l latin small letter l U+006C p latin small letter p U+0070 t latin small letter t U+0074 y latin small letter y U+0079