途方もない (outrageous, preposterous)

A compound i-adjective meaning 'extraordinary, preposterous, outrageous, absurd' — etymologically '(it) lacks a way / a course' (途方 + も + ない). Often modifies amounts, distances, or times that exceed all reasonable bounds: 途方もない金額 ('an outrageous sum'), 途方もない夢 ('a preposterous dream').