RETARDANT Scrabble 10 Words With Friends 11 Scrabble letter values: R1E1T1A1R1D2A1N1T1 = 10 Definition noun any agent that retards or delays or hinders. — synonyms: retardent, retardation Examples “flame-retardant” See all 143 words you can make from RETARDANT → 9-letter words Words starting with R Words ending with T ← Unscramble different letters