rapidness rapidly • rapier · · · Info · Definitions · Synonyms · Characters · · rapidness · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a rate that is rapid. Synonyms: celerity, quickness, rapidity, speediness. · · Noun Definition 1 Synonyms · · · celerity · · Synonym 1 quickness · · Synonym 2 rapidity · · Synonym 3 speediness · · Synonym 4 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073