COMA Meaning of COMA in English noun 1.Synonyms: faint , blackout, swoon, syncope 2.Synonyms: lethargy 1, dullness, hebetude, languor, lassitude, sleep, slumber, stupor, torpidity, torpor Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003