Which to use
“lest” and “LSD” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #27,865
- “lest” frequency rank
- #26,788
- “LSD” frequency rank
- 54653
- confusion score
Side-by-Side Comparison
| Feature | lest | LSD |
|---|---|---|
| Definition | Pierres, sable ou autres matières pesantes dont on charge le fond d’un bateau pour lui donner la stabilité convenable, en le faisant suffisamment entrer dans l’eau. | Composé organique de la famille des ergolines, le diéthylamide de l’acide lysergique, dérivé de l’acide lysergique présent dans l’ergot de seigle, connu comme un hallucinogène très puissant actif à de très faibles doses. |
Where the eye mixes lest and LSD
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses lest with LSD
A purely visual mix-up. lest (\lɛst\) and LSD (\ɛl.ɛs.de\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 54653, derived from the frequency rank of both members and their visual similarity.
lest is recorded at frequency rank #27,865, classified as anoun, pronounced \lɛst\. LSD is at rank #26,788, tagged as anoun, pronounced \ɛl.ɛs.de\.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 54653, this pair ranks #132,582 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of lest vs LSD
Shared letters: ls. Private to "lest": et. Private to "LSD": d.
"lest" · 4 letters · shape CVCC · "LSD" · 3 letters · shape CCC
Known mistypes of this pair
- lest ← elst · lesst · lestt · lets · llest · lset
Frequently Asked Questions
Can "lest" and "LSD" be used interchangeably?
Frequency check: "lest" vs "LSD" - which ranks higher?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "lest" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "LSD" - compare definitions side by side with the headword page. Word entry
- This pair ranks #132,582 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "lest" and "LSD" also get mixed up with nearby pairs, the highest-scored neighbour is "lep vs lest". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #132,582 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.