Which to use
“acted” and “alter” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #4,425
- “acted” frequency rank
- #6,540
- “alter” frequency rank
- 10965
- confusion score
Side-by-Side Comparison
| Feature | acted | alter |
|---|---|---|
| Definition | simple past and past participle of act | To change the form or structure of. |
Where the eye mixes acted and alter
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between acted and alter
A purely visual mix-up. acted (/ˈæk.tɪd/) and alter (/ˈɒl.tə/) 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 10965, derived from the frequency rank of both members and their visual similarity.
acted is recorded at frequency rank #4,425, classified as averb, pronounced /ˈæk.tɪd/. alter is at rank #6,540, tagged as averb, pronounced /ˈɒl.tə/.
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 10965, this pair ranks #489,587 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of acted vs alter
Shared letters: aet. Private to "acted": cd. Private to "alter": lr.
"acted" · 5 letters · shape VCCVC · "alter" · 5 letters · shape VCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "acted" and "alter" be used interchangeably?
In ordinary English text, does "acted" or "alter" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "acted" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "alter" - compare definitions side by side with the headword page. Word entry
- This pair ranks #489,587 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "acted" and "alter" also get mixed up with nearby pairs, the highest-scored neighbour is "alter vs althea". 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 #489,587 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.