Which to use
“flue” and “fugue” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #38,401
- “flue” frequency rank
- #40,254
- “fugue” frequency rank
- 78655
- confusion score
Side-by-Side Comparison
| Feature | flue | fugue |
|---|---|---|
| Definition | A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace). | A contrapuntal piece of music wherein a particular melody is played in a number of voices, each voice introduced in turn by playing the melody. |
Where the eye mixes flue and fugue
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. flue runs 4 letters (CCVV) against fugue's 5 (CVCVV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses flue with fugue
A purely visual mix-up. flue (/fluː/) and fugue (/ˈfyɡ/) 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 78655, derived from the frequency rank of both members and their visual similarity.
flue is recorded at frequency rank #38,401, classified as anoun, pronounced /fluː/. fugue is at rank #40,254, tagged as anoun, pronounced /ˈfyɡ/.
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 78655, this pair ranks #24,053 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of flue vs fugue
Shared letters: efu. Private to "flue": l. Private to "fugue": g.
"flue" · 4 letters · shape CCVV · "fugue" · 5 letters · shape CVCVV
Known mistypes of this pair
Frequently Asked Questions
Do "flue" and "fugue" mean the same thing in a sentence?
In ordinary English text, does "flue" or "fugue" show up more?
After this comparison
Eye-level mix-up between "flue" and "fugue" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "flue" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fugue" - compare definitions side by side with the headword page. Word entry
- This pair ranks #24,053 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flue" and "fugue" also get mixed up with nearby pairs, the highest-scored neighbour is "flue vs fou". 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 #24,053 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.