off–peak 
/ˈɑ:fˈpi:k/ adjective
/ˈɑ:fˈpi:k/ adjective : less busy or active than other times : not peak
▪ What are the telephone rates during off-peak hours? ▪ They always vacation during off-peak periods.
▪ What are the telephone rates during off-peak hours? ▪ They always vacation during off-peak periods.
