We found 29 dictionaries that define the word lest:

General (26 matching dictionaries)

1. lest: Merriam-Webster.com
2. lest: Oxford Learner's Dictionaries
3. lest: American Heritage Dictionary of the English Language
4. lest: Collins English Dictionary
5. lest: Vocabulary.com
6. Lest, l'est, lest, l'Est: Wordnik
7. lest: Cambridge Advanced Learner's Dictionary
8. lest: Wiktionary
9. lest: Webster's New World College Dictionary, 4th Ed.
10. lest: The Wordsmyth English Dictionary-Thesaurus
11. lest: Infoplease Dictionary
12. Lest, lest: Dictionary.com
13. lest: Online Etymology Dictionary
14. LEST, Lest: Wikipedia, the Free Encyclopedia
15. Lest: Online Plain Text English Dictionary
16. lest: Webster's Revised Unabridged, 1913 Edition
17. lest: Rhymezone
18. Lest: AllWords.com Multi-Lingual Dictionary
19. lest: Webster's 1828 Dictionary
20. lest: Stammtisch Beau Fleuve Acronyms
21. lest: Free Dictionary
22. lest: LookWAYup Translating Dictionary/Thesaurus
23. lest: Dictionary/thesaurus
24. lest: Wikimedia Commons US English Pronunciations

Miscellaneous (2 matching dictionaries)

25. LEST: Acronym Finder
26. lest: Idioms

Slang (1 matching dictionary)

27. lest: Urban Dictionary

(Note: See lesting as well.)

Definitions from WordNet ( ) ▸ adverb:  for fear that ("She tiptoed lest her mother should hear her") ▸ adverb:  that (after verbs explicitly expressing fear etc.) ("He worried lest he should be late") Opposite: so that, in order that, for purpose of Types: in case, in order that, in order to, in order not to, in order that not, in order to not, more... Phrases: Lest we forget, Lest Darkness Fall, Lest We Forget What We Came Here to Do, fire lest, lest used, more... Adjectives: little, new, whole, dead, 4th, young, thick, wicked, own, high, fearful ▸ Word origin ▸ Words similar to lest ▸ Usage examples for lest ▸ Idioms related to lest ▸ Wikipedia articles (New!) ▸ Words that often appear near lest ▸ Rhymes of lest ▸ Invented words related to lest