retardant retardance • retardate · · · Info · Definitions · Synonyms · Characters · · retardant · · Text Latin · · Script 9 · · Length Definitions · · · (noun) any agent that retards or delays or hinders. Synonyms: retardent, retardation. Example: "Flame-retardant." · · Noun Definition 1 Synonyms · · · retardent · · Synonym 1 retardation · · Synonym 2 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074