lest

lɛst

Definition

Definition of lest - Reverso English Dictionary

Conjunction

precaution

Dated

used to prevent something undesirable from happening

Dated

He wore a raincoat lest he get wet.
She spoke softly lest she wake the baby.
He studied hard lest he fail the exam.

for fear that

in case

Add a suggestion |

Feedback:

Expressions with lest

💡 Discover popular phrases, idioms, collocations, or phrasal verbs. Click any expression to learn more, listen to its pronunciation, or save it to your favorites.

lest we forget

exp.

used in Remembrance Day ceremonies to remember war casualties

Lest we forget, we honor the fallen soldiers today.

lest you forget

conj.

used to remind someone to not forget something important

Take your keys, lest you forget them.

Origin of lest

Old English, þy læs þe (whereby less that)

View all translations of lest

✨Click below to see the appropriate translations facing each meaning.

French:de peur que, ...
German:damit, ...
Italian:per paura che, ...
Spanish:no fuera a ser que, ...
Portuguese:para não, ...
Chinese:以免, ...
Japanese:ないように, ...
Arabic:لئلا, ...
Hebrew:שֶׁמָּא, ...
Russian:чтобы не, ...
Ukrainian:щоб не, ...
Hindi:इसलिए, ...
Bengali:যেন, ...
Catalan:per no, ...
Czech:aby ne, ...
Danish:for at, ...
Dutch:opdat, ...
Greek:για να μην, ...
Hungarian:nehogy, ...
Khmer:ក្រែងលោ, ...
Korean:않도록, ...
Persian:تا, ...
Polish:żeby, ...
Portuguese (BR):para não, ...
Romanian:ca să nu, ...
Swedish:för att inte, ...
Thai:เพื่อไม่ให้, ...
Turkish:için, ...
Vietnamese:kẻo, ...

Browse the dictionary entries starting with “l”:

Discover how Reverso redefines the dictionary

Go beyond “simple words”

100,000 expressions & idioms Understand any expression you come across: from corporate jargon like 💬 touch base or ↩️ circle back to everyday expressions such as 🌊 out of the blue or 🦆 lame duck, as well as idioms like 🍲 spill the beans and 🐎 hold your horses.

40,000 images When you search for a concrete noun or object, images help you grasp the meaning at a glance. Try searching for 🧵 puppytooth, 🎠 merry-go-round, ⚜️ fleur-de-lys, or 💤 bunk bed.

Informal language & slang Everyday conversations are packed with informal expressions and slang. Meanings are clearly tagged, so you'll always know when a word is casual. Look up hangry (😋 hungry + 😡 angry), 😎 rizz, 🕹️ noob, or 🔑 low-key.

Abbreviations & acronyms Quickly decode modern abbreviations and acronyms. Go from IDK to OMG in seconds and stay up to date with popular abbreviations such as 🐐 GOAT, 📜 tl;dr, 👀 POV, or 🖥️ AFK.

Regional usage (US / UK) Reverso highlights regional differences between American and British English. You’ll never have to wonder where a word is commonly used: try lift vs. elevator, courgette vs. zucchini, or popular British slang like dodgy or banter. What’s more, when you search for 'color', you’ll immediately see its British counterpart, 'colour'.

Get more than a simple definition

Translations for each meaning View translations alongside each meaning to see how a word is translated in each context. Simply toggle translations ON and choose among 25+ languages. You can also display the translation of definitions or examples into your native language to deepen your understanding.

Synonyms & related words by meaning View synonyms and related words for each meaning, not just for the word as a whole. This helps you choose the most accurate word for your context. Click the

icon to discover related terms: analogies, antonyms, common collocates, words with same roots, umbrella terms… Try with happening or hunch.

Multiple examples for every meaning Each meaning comes with three real-life examples to show you how the word is used in different contexts. Click the

icon next to the first example to see two additional options and learn to use new vocabulary naturally.

Go from understanding to mastery

Save words for later review Click the

icon to save words you want to revisit. You can also save a specific meaning by clicking on the

icon next to it. For example, you might want to save the word “table” as a verb, which means “to postpone”.

Practice with personalized flashcards Reverso automatically transforms your searches and saved words into personalized flashcards and quizzes, featuring high-quality audio and usage examples. This helps you transform terms you only recognize into words you actually use confidently.

Learn with Netflix, YouTube, and your favorite texts With Reverso Chrome extension, transform movies, TV shows, articles, or song lyrics into an interactive lesson. Look up words and expressions in one click on any website and learn with your favorite content.