ˈlet-up BrE AmE ( also let‧up American English ) /ˈletʌp/ noun [singular, uncountable]
when something unpleasant stops or becomes less difficult, severe etc
no let-up/not any let-up
The pressure at work continued without any let-up.
let-up in
Streets were flooded, but still there was no let-up in the rain.
⇨ let up at ↑ let 1