dead–end

to come to an end after several fruitless years, the research seems to have simply dead-ended Synonyms break off, break up, close, conclude, dead-end, determine, die, discontinue, elapse, end, expire, finish, go, halt, lapse, leave off, let up, pass, quit, stop, terminate, wind up, wink (out)Related Words desist (from), lay off (of), refrain (from); give over [British], knock off, pack (up or in); break down, conk (out), cut out, stall; pause, stay, suspend; abate, peter (out), wind downNear Antonyms draw out, extend, prolong, protractAntonyms continue, hang on, persist