mustard gas mustard family • mustard greens · · · Info · Definitions · Synonyms · Characters · · mustard gas · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) a toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs; there is no known antidote. Synonyms: mustard gas, mustard agent, blistering agent, dichloroethyl sulfide, sulfur mustard. · · Noun Definition 1 Synonyms · · · mustard agent · · Synonym 1 blistering agent · · Synonym 2 dichloroethyl sulfide · · Synonym 3 sulfur mustard · · Synonym 4 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 g latin small letter g U+0067 m latin small letter m U+006D r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075