Etymology

From Middle French, derivative of greer, agreer ‎(“to rig, equip”), from Anglo-Norman agreier ‎(“to equip, equip a ship with tackle”), from a- + *greier, from Old Norse greida ‎(“to put in order, prepare, arrange”), from Proto-Germanic *garaidijaną ‎(“to prepare, put in order”), from Proto-Indo-European *reydʰ- ‎(“to put in order, make comfortable”). Cognate with Old English ġerǣdan ‎(“to arrange, assist”), Middle High German gereiten ‎(“to arrange, prepare”), Middle Dutch gereide ‎(“equipment, harness”). More at ready.