leachvsloathWhich spelling fits?

Quick tell: leach is a noun, loath is an adjective, so they fill different roles in a sentence.

Which to use

“leach” is a noun and “loath” is an adjective - they look or sound alike but fill different roles in a sentence.

#20,983
“leach” frequency rank
#43,241
“loath” frequency rank
64224
confusion score

Side-by-Side Comparison

Feature leach loath
Definition A quantity of wood ashes, through which water passes, and thus imbibes the alkali. Averse, disinclined; reluctant, unwilling. Always followed by a verbal phrase.

Where the eye mixes leach and loath

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

5 ch
leach
5 ch
loath

Look-alike desk: leach vs loath

These two trip readers on the page rather than in the ear: leach is /liːt͡ʃ/ while loath is /ləʊθ/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 64224, derived from the frequency rank of both members and their visual similarity.

leach is recorded at frequency rank #20,983, classified as anoun, pronounced /liːt͡ʃ/. loath is at rank #43,241, tagged as anadj, pronounced /ləʊθ/.

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 64224, this pair ranks #78,843 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of leach vs loath

Shared letters: ahl. Private to "leach": ce. Private to "loath": ot.

"leach" · 5 letters · shape CVVCC  ·  "loath" · 5 letters · shape CVVCC

Known mistypes of this pair

  • leachelach · laech · leacch · leachh · leahc · lecah · lleach
  • loathlaoth · lloath · loaht · loathh · loatth · lotah · olath

Frequently Asked Questions

Can "leach" and "loath" be used interchangeably?
No - they are not even the same part of speech. "leach" is a noun and "loath" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "leach" or "loath"?
"leach" is the more common of the two: it sits at frequency rank #20,983 in our English list, against #43,241 for "loath". 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 "leach" and "loath" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "leach" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "loath" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #78,843 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "leach" and "loath" also get mixed up with nearby pairs, the highest-scored neighbour is "loath vs LSAT". 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 #78,843 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