Definition of ready adverb from the Oxford Advanced Learner's Dictionary

 

ready

 adverb
adverb
BrE BrE//ˈredi//
 
; NAmE NAmE//ˈredi//
 
 
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(used before a past participle, especially in compounds) already done ready-cooked meals The concrete was ready mixed. ready-pasted wallpaper Word Origin Middle English: from Old English rǣde (from a Germanic base meaning ‘arrange, prepare’; related to Dutch gereed) + -y.
See the Oxford Advanced American Dictionary entry: ready