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lest

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conjunction \ˈlest\

Simple Definition of lest

  • : for fear that

  • —used when you are saying something in order to prevent something from happening

Source: Merriam-Webster's Learner's Dictionary

Full Definition of lest

  1. :  for fear that —often used after an expression denoting fear or apprehension <worried lest she should be late> <hesitant to speak out lest he be fired>

Origin and Etymology of lest

Middle English les the, leste, from Old English thȳ lǣs the, from thȳ (instrumental of thæt that) + lǣs + the, relative particle


First Known Use: before 12th century



LEST Defined for Kids

lest

play
conjunction \ˈlest\

Definition of lest for Students

  1. :  for fear that <“I have to be sharp and clever, lest I go hungry.” — E. B. White, Charlotte's Web>




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