Which to use
“forth” is an adverb and “forum” is a noun - they look or sound alike but fill different roles in a sentence.
- #3,625
- “forth” frequency rank
- #3,756
- “forum” frequency rank
- 7381
- confusion score
Side-by-Side Comparison
| Feature | forth | forum |
|---|---|---|
| Definition | Forward in time, place or degree. | A place for discussion. |
Where the eye mixes forth and forum
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: forth vs forum
These two trip readers on the page rather than in the ear: forth is /fɔːθ/ while forum is /ˈfɔːɹəm/. 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 (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 7381, derived from the frequency rank of both members and their visual similarity.
forth is recorded at frequency rank #3,625, classified as anadv, pronounced /fɔːθ/. forum is at rank #3,756, tagged as anoun, pronounced /ˈfɔːɹəm/.
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 7381, this pair ranks #507,351 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of forth vs forum
Shared letters: for. Private to "forth": ht. Private to "forum": mu.
"forth" · 5 letters · shape CVCCC · "forum" · 5 letters · shape CVCVC
Known mistypes of this pair
Frequently Asked Questions
Can "forth" and "forum" be used interchangeably?
In ordinary English text, does "forth" or "forum" show up more?
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 "forth" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "forum" - compare definitions side by side with the headword page. Word entry
- This pair ranks #507,351 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "forth" and "forum" also get mixed up with nearby pairs, the highest-scored neighbour is "foh vs forth". 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 #507,351 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.