Crossword solverSynonyms for sulfur mustard4 crossword answers for “sulfur mustard” (6,7), sorted by letter count.How many letters?All410112115120110 letters 1mustard gas(7,3)12 letters 1mustard agent(7,5)15 letters 1blistering agent(10,5)20 letters 1dichloroethyl sulfide(13,7)