Which to use
“lest” is a verb and “LSD” is an abbrev - they look or sound alike but fill different roles in a sentence.
- #18,316
- “lest” frequency rank
- #21,684
- “LSD” frequency rank
- 40000
- confusion score
Side-by-Side Comparison
| Feature | lest | LSD |
|---|---|---|
| Definition | 2. Person Plural Imperativ Präsens Aktiv des Verbs lesen | Lysergsäurediethylamid (eine psychedelische Droge) |
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
These two trip readers on the page rather than in the ear: lest is [leːst] while LSD is [ɛlʔɛsˈdeː]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 40000, derived from the frequency rank of both members and their visual similarity.
lest is recorded at frequency rank #18,316, classified as averb, pronounced [leːst]. LSD is at rank #21,684, tagged as anabbrev, pronounced [ɛlʔɛsˈdeː].
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 40000, this pair ranks #1,520,854 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.
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 · 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 #1,520,854 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "lest" and "LSD" also get mixed up with nearby pairs, the highest-scored neighbour is "Lai vs LSD". 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 #1,520,854 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.