IMPASSE Meaning of IMPASSE in English noun 1.Synonyms: dead end , blind alley, cul-de-sac, pocket 2.Synonyms: predicament , box, corner, dilemma, fix, hole, jam, pickle, plight, scrape Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003