Merriam-Webster's Collegiate® Dictionary, 11th Edition
SORE
I. adjective (sorer; sorest)
Etymology: Middle English sor, from Old English sār; akin to Old High German sēr sore and probably to Old Irish saeth distress Date: before 12th century
1. causing pain or distress , painfully sensitive ; tender , hurt or inflamed so as to be or seem painful , attended by difficulties, hardship, or exertion, angry , irked , soreness noun
II. noun Date: before 12th century a localized sore spot on the body, a source of pain or vexation ; affliction ,
III. adverb Date: before 12th century sorely