leechvsLeithWhich spelling fits?

Quick tell: leech is a noun, Leith is a name, so they fill different roles in a sentence.

Which to use

“leech” is a noun and “Leith” is a name - they look or sound alike but fill different roles in a sentence.

#23,327
“leech” frequency rank
#27,539
“Leith” frequency rank
50866
confusion score

Side-by-Side Comparison

Feature leech Leith
Definition An aquatic blood-sucking annelid of subclass Hirudinea, especially Hirudo medicinalis. A port and suburban town within the City of Edinburgh council area, Scotland.

Where the eye mixes leech and Leith

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
leech
5 ch
Leith

Visual trap between leech and Leith

These two trip readers on the page rather than in the ear: leech is /liːt͡ʃ/ while Leith is /liːθ/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 50866, derived from the frequency rank of both members and their visual similarity.

leech is recorded at frequency rank #23,327, classified as anoun, pronounced /liːt͡ʃ/. Leith is at rank #27,539, tagged as aname, pronounced /liːθ/.

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 50866, this pair ranks #170,456 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of leech vs Leith

Shared letters: ehl. Private to "leech": c. Private to "Leith": it.

"leech" · 5 letters · shape CVVCC  ·  "Leith" · 5 letters · shape CVVCC

Known mistypes of this pair

  • leechelech · leceh · lech · leecch · leechh · leehc · lleech
  • Leithelith · leiht · leithh · leitth · letih · lieth · lleith

Frequently Asked Questions

Is swapping "leech" for "Leith" ever safe?
No - they are not even the same part of speech. "leech" is a noun and "Leith" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "leech" or "Leith"?
"leech" is the more common of the two: it sits at frequency rank #23,327 in our English list, against #27,539 for "Leith". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "leech" and "Leith" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "leech" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Leith" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #170,456 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "leech" and "Leith" also get mixed up with nearby pairs, the highest-scored neighbour is "Leith vs levity". 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 #170,456 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list