Oxford Dictionary English off-peak adjectiveadjective BrE BrE//ˌɒf ˈpiːk// ; NAmE NAmE//ˌɔːf ˈpiːk// , NAmE//ˌɑːf ˈpiːk// [only before noun] Add to my wordlistjump to other resultshappening or used at a time that is less popular or busy, and therefore cheaper off-peak electricity/travel Oxford Collocations DictionaryOff-peak is used with these nouns: period See full entrySee off-peak in the Oxford Advanced American DictionaryCheck pronunciation: off-peak oxfordlearnersdictionaries.com