lest

conjunction \ ˈlest \

Definition of lest

: 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



LEST Defined for English Language Learners

lest

conjunction

Definition of lest for English Language Learners

  • : for fear that

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


LEST Defined for Kids

lest

conjunction \ ˈlest \

Definition of lest for Students

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


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