let up

British  

verb

1. to diminish, slacken, or stop

2. informal (foll by on) to be less harsh (towards someone)

---

noun

1. informal a lessening or abatement

let up Idioms  

1. See let down , def. 2.

2. Cease, stop entirely, as in The rain has let up so we can go out . [Late 1700s]

3. let up on . Be or become more lenient with, take the pressure off, as in Why don't you let up on the child? [Late 1800s]

---

Example Sentences

Stephens, founder of independent wealth and family office advisory Evertern Wealth, saw accelerating interest in this message during the Covid pandemic, but it hasn’t let up.

From Barron's • Apr. 20, 2026

After declining in 2024 and 2023, investment began to surge at the start of 2024 — and it hasn’t let up.

From MarketWatch • Apr. 7, 2026

It hopes to preserve its most capable defensive weapons in the face of daily Iranian barrages that haven’t let up through four weeks of war.

From The Wall Street Journal • Mar. 30, 2026

Scotland lost men to injury but never let up.

From BBC • Mar. 7, 2026

Because if people see that they’re getting to you, they’ll never let up.

From "The Benefits of Being an Octopus" by Ann Braden