What is the origin of yare?

Yare is an uncommon adjective meaning “ready, prepared.” As is usual for short words, Middle English shows more than two dozen spellings; Old English is more restrained, gearu and gearo being the most common (before the inflections are added). The Old English forms derive from the verb gearwian “to prepare, equip.” Gearwian is the Old English development of the Germanic verb garwian “to prepare, equip, make.” The noun garwi– “equipment, adornment,” a derivative of garwian, is the source for the Old Norse noun gervi, gørvi “apparel, equipment,” source of English gear. The English noun garb comes via Middle French garbe “grace, graceful figure, elegance,” from Italian garbo “form, grace, elegance (of dress),” a derivative of the verb garbare “to be pleasant,” from Old High German garawi “dress, equipment,” ultimately from Germanic garwian.