Which to use
“flue” and “fume” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #38,401
- “flue” frequency rank
- #45,384
- “fume” frequency rank
- 83785
- confusion score
Side-by-Side Comparison
| Feature | flue | fume |
|---|---|---|
| Definition | A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace). | A gas or vapour/vapor that is strong-smelling or dangerous to inhale. |
Where the spellings diverge
Shared letters are muted; the letters that actually set flue and fume apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
A purely visual mix-up. flue (/fluː/) and fume (/fjuːm/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 83785, 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/. fume is at rank #45,384, tagged as anoun, pronounced /fjuːm/.
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 83785, this pair ranks #13,169 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of flue vs fume
Shared letters: efu. Private to "flue": l. Private to "fume": m.
"flue" · 4 letters · shape CCVV · "fume" · 4 letters · shape CVCV
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "flue" and "fume" be used interchangeably?
Which is more common, "flue" or "fume"?
Remembering flue vs fume
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “flue” entry
- Browse more pairs most likely to be confused. Most confusable