“Lest” is a short, old-fashioned word that means “so that something bad does not happen.” It shows you’re trying to prevent a mistake or danger.
In real life, people don’t use “lest” in casual chat, but you’ll spot it in books, speeches, or formal notes when someone wants to sound careful or poetic. Example: “Save your work often, lest you lose everything.” It adds a small warning without sounding bossy.
Meaning & Usage Examples
• “Wear sunscreen, lest you get burned.”
• “I left early, lest I miss the last train.”
• “He whispered, lest the baby wake up.”
Common Context
You’ll mainly see “lest” in written English—novels, legal warnings, or motivational posters. It fits where tone matters more than everyday conversation.
Is “lest” still used today?
Yes, but mostly in writing or speeches, not in daily talk.
Can I replace “lest” with another word?
Sure. “So that… not,” “in case,” or “to avoid” work in plain speech.
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