From Longman Dictionary of Contemporary Englishlet up phrasal verb1 FINISH/COME TO AN ENDto become less severe or harmful The wind had dropped and the rain gradually let up.2 to be less severe, unkind, or violent towards someone Even when the crowd had scattered, the police didn’t let up.3 to stop working as hard as you were You’re doing really well, but you can’t afford to let up now. → let→ See Verb tablelet-upˈlet-up (also letup American English) /ˈletʌp/ noun [singular, uncountable] PAUSEwhen something unpleasant stops or becomes less difficult, severe etcno 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 let1
Examples from the Corpus
let-up• There can be no let-up in the war against drugs.• There's going to be no let-up, you know.• There was to be no let-up for more than three months.• On past form he need fear no let-up in the fight.• At peak times there is no let-up with an endless string of calls back-to-back.• The second period saw no let-up from either side with both still determined to play 15-man rugby. 