foulingvsfusingTell them apart

Which to use

“fouling” and “fusing” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#32,811
“fouling” frequency rank
#32,405
“fusing” frequency rank
65216
confusion score

Side-by-Side Comparison

Feature fouling fusing
Definition present participle and gerund of foul present participle and gerund of fuse

Where the eye mixes fouling and fusing

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

7 ch
fouling
6 ch
fusing

Why the eye confuses fouling with fusing

A purely visual mix-up. fouling (/ˈfaʊlɪŋ/) and fusing (/ˈfjuːzɪŋ/) 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 65216, derived from the frequency rank of both members and their visual similarity.

fouling is recorded at frequency rank #32,811, classified as averb, pronounced /ˈfaʊlɪŋ/. fusing is at rank #32,405, tagged as averb, pronounced /ˈfjuːzɪŋ/.

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 65216, this pair ranks #73,874 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of fouling vs fusing

Shared letters: fginu. Private to "fouling": lo. Private to "fusing": s.

"fouling" · 7 letters · shape CVVCVCC  ·  "fusing" · 6 letters · shape CVCVCC

Known mistypes of this pair

  • foulingffouling · foluing · fouilng · foulign · foulingg · foulinng · foulling · foulnig
  • fusingffusing · fsuing · fuisng · fusign · fusingg · fusinng · fusnig · ufsing

Frequently Asked Questions

Do "fouling" and "fusing" mean the same thing in a sentence?
No. They are said differently (/ˈfaʊlɪŋ/ versus /ˈfjuːzɪŋ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "fouling" or "fusing" show up more?
"fusing" is the more common of the two: it sits at frequency rank #32,405 in our English list, against #32,811 for "fouling". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "fouling" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fusing" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #73,874 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "fouling" and "fusing" also get mixed up with nearby pairs, the highest-scored neighbour is "fondling vs fouling". 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 #73,874 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