lest
/lɛst/
Dictionary
conjunction
- For fear that; that not; in order to prevent something from happening; in case.
"He won’t go outside, lest he be eaten by those ravenous eagles."
- (after certain expressions denoting fear or apprehension) that (without the negative particle; introduces the reason for an emotion.)
"I am afraid lest I revealed too much."
Synonyms:before
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