Old English ræde, geræde, from Proto-Germanic *garaidijaz "arranged" (cf. Old Frisian rede, Middle Dutch gereit, Old High German reiti, Middle High German bereite, German bereit, Old Norse greiðr "ready, plain," Gothic garaiþs "ordered, arranged"), from PIE root *reidh-. Lengthened in Middle English by change of ending. Ready-made first attested mid-15c.; ready-to-wear is from 1890.