lest definition

  • conjunction:
    • For fear that: tiptoed lest the guard should hear this lady; nervous lest he become sick.
    • For concern that; that . . . perhaps not; in order that . . . maybe not; just in case.
    • That (without unfavorable particle); -- after particular expressions denoting fear or apprehension.
    • For worry that; that … perhaps not; in order that … maybe not.
    • That (without having the bad particle); -- after certain expressions denoting fear or apprehension.
  • verb-intransitive:
    • to concentrate.
  • noun:
    • Lust; desire; pleasure.
  • adjective:
    • Last; minimum.
  • others:
    • For concern that; that … not; to ensure … maybe not: because, he fled lest (or for concern that) he should really be killed; simply take heed lest you fall (which you fall perhaps not).
    • an such like. A Middle English form of final, minimum, record, lust.

Related Sources

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    • because it derives from the word…
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