Which to use
“flu” is a noun and “flung” is a verb - they look or sound alike but fill different roles in a sentence.
- #7,564
- “flu” frequency rank
- #18,828
- “flung” frequency rank
- 26392
- confusion score
Side-by-Side Comparison
| Feature | flu | flung |
|---|---|---|
| Definition | Influenza. | simple past and past participle of fling |
Where the eye mixes flu and flung
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: flu vs flung
These two trip readers on the page rather than in the ear: flu is /fluː/ while flung is /ˈflʌŋ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “flu” sits inside “flung”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 26392, derived from the frequency rank of both members and their visual similarity.
flu is recorded at frequency rank #7,564, classified as anoun, pronounced /fluː/. flung is at rank #18,828, tagged as averb, pronounced /ˈflʌŋ/.
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 26392, this pair ranks #387,039 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of flu vs flung
Shared letters: flu. Private to "flu": -. Private to "flung": gn.
"flu" · 3 letters · shape CCV · "flung" · 5 letters · shape CCVCC
Known mistypes of this pair
- flung ← fflung · fllung · flnug · flugn · flungg · flunng · fulng · lfung
Frequently Asked Questions
Can "flu" and "flung" be used interchangeably?
In ordinary English text, does "flu" or "flung" show up more?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "flu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flung" - compare definitions side by side with the headword page. Word entry
- This pair ranks #387,039 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flu" and "flung" also get mixed up with nearby pairs, the highest-scored neighbour is "Flagg vs flung". 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 #387,039 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.