Oxford Dictionary English

peak

verb
verb
BrE BrE//piːk//
; NAmE NAmE//piːk//
Verb Forms present simple I / you / we / they peak
BrE BrE//piːk//
; NAmE NAmE//piːk//
 he / she / it peaks
BrE BrE//piːks//
; NAmE NAmE//piːks//
 past simple peaked
BrE BrE//piːkt//
; NAmE NAmE//piːkt//
 past participle peaked
BrE BrE//piːkt//
; NAmE NAmE//piːkt//
 -ing form peaking
BrE BrE//ˈpiːkɪŋ//
; NAmE NAmE//ˈpiːkɪŋ//
 Trends
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[intransitive] to reach the highest point or value Oil production peaked in the early 1980s. Unemployment peaked at 17%. an athlete who peaks (= produces his or her best performance) at just the right time Wordfindertrendboom, decline, dip, fluctuate, level off/​out, peak, plateau, plummet, slump, trend See related entries: Trends Word Originmid 16th cent.: probably a back-formation from peaked, variant of dialect picked ‘pointed’.
See peak in the Oxford Learner's Dictionary of Academic EnglishSee peak in the Oxford Advanced American Dictionary
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