We found 23 dictionaries that define the word let up:

General (19 matching dictionaries)

1. let up: Longman Dictionary of Contemporary English
2. let up: Merriam-Webster
3. let up: Oxford Learner's Dictionaries
4. let-up, let-up, let up: Collins English Dictionary
5. let up: Vocabulary.com
6. let-up: Wordnik
7. let-up, let up: Cambridge Advanced Learner's Dictionary
8. let-up, let up: Wiktionary
9. Let-up, let up: Dictionary.com
10. Let-up: Online Plain Text English Dictionary
11. let up: Rhymezone
12. let-up: AllWords.com Multi-Lingual Dictionary
13. LET UP: Dictionary of Americanisms (1848)
14. let up: Phrasal Verb Page
15. let-up, let up: FreeDictionary.org
16. let up: Mnemonic Dictionary
17. let-up, let up: TheFreeDictionary.com

Business (1 matching dictionary)

18. let up: Legal dictionary

Computing (1 matching dictionary)

19. let up: Encyclopedia

Miscellaneous (1 matching dictionary)

20. let up: Idioms

Slang (1 matching dictionary)

21. let up: Urban Dictionary

(Note: See let_ups as well.)

Definitions from Wiktionary (let up) ▸ verb:  (intransitive) To cease or stop. Similar: ease off, abate, ease up, slack off, slack, die away, relent, cease, stop, let off, more... Opposite: intensify, worsen, escalate Types: break, let down, let off, let go, let in, let out, let over, let through, let up on, more... Phrases: let up on, to let up, Mammas Don't Let Your Babies Grow Up to Be Cowboys, to let others speak up, more... Adjectives: obviate, lower, unbusy, loose, empty, void, relent, clear, abstract, minus, ranck ▸ Words similar to let up ▸ Usage examples for let up ▸ Idioms related to let up ▸ Wikipedia articles (New!) ▸ Words that often appear near let up ▸ Rhymes of let up ▸ Invented words related to let up