time out of mind noun 2adverb 1forms 1 noun2 •The distant past beyond anyone's memory.Harvests at Boisveyrac had been gathered under arms since time out of mind, with sentries posted far up the shore. — 1904 •A lengthy duration of time, longer than is readily remembered.They were Episcopalians, and for time out of mind had rented a half-pew in the church of their denomination on California Street. — 1899 adverb1 •(old-fashioned) For a lengthy period of time; on numerous occasions.Her chariot is an empty hazel-nut / Made by the joiner squirrel or old grub, / Time out o' mind the fairies' coachmakers. — 1599 formstimes out of mind