Meaning of “off-peak” in the English Dictionary

"off-peak" in Business English

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off-peakadjective [ before noun ]

uk /ˌɒfˈpiːk/ us /ˈɒfˈpiːk/

not at the most popular and expensive time, when many people are doing or using a particular thing:

off-peak phone calls
off-peak train times
off-peak hours
Off-peak fares are cheaper prices for travelling on trains that are less busy.

It's cheaper to travel off-peak.

(Definition of “off-peak” from the Cambridge Business English Dictionary © Cambridge University Press)