Definition

Used to express a fear or concern that something undesirable might happen.

Example

She whispered lest anyone overhear her plans.

Conversation

I decided to leave early today, lest I get stuck in traffic again.

Good idea! That drive can be a real nightmare sometimes.

Yeah, I always worry about being late for my meetings.

Exactly, it's better to be safe than sorry.

Synonyms & Antonyms

Root Explanation

The word 'lest' originates from Old English 'lǣst', meaning 'for fear that' or 'to avoid'. It is used to introduce a clause that expresses a negative consequence or a precaution.

Memory Tip

Think of 'lest' as a way to express a precaution — it helps you remember that it means to avoid something negative.

Visually Confused Words