Which to use
“adapter” and “adaptor” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #12,898
- “adapter” frequency rank
- #44,595
- “adaptor” frequency rank
- 57493
- confusion score
Side-by-Side Comparison
| Feature | adapter | adaptor |
|---|---|---|
| Definition | One who is capable of adapting to differing situations. | Alternative spelling of adapter. |
Where the eye mixes adapter and adaptor
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.
Visual trap between adapter and adaptor
A purely visual mix-up. adapter (/əˈdæptə(ɹ)/) and adaptor (/əˈdæptər/) 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 a single letter - e in “adapter” becomes o in “adaptor”. Our composite confusion score for this pair is 57493, derived from the frequency rank of both members and their visual similarity.
adapter is recorded at frequency rank #12,898, classified as anoun, pronounced /əˈdæptə(ɹ)/. adaptor is at rank #44,595, tagged as anoun, pronounced /əˈdæptər/.
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 57493, this pair ranks #118,951 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of adapter vs adaptor
Shared letters: adprt. Private to "adapter": e. Private to "adaptor": o.
"adapter" · 7 letters · shape VCVCCVC · "adaptor" · 7 letters · shape VCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "adapter" and "adaptor" be used interchangeably?
Frequency check: "adapter" vs "adaptor" - which ranks higher?
Useful next steps
Eye-level mix-up between "adapter" and "adaptor" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "adapter" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "adaptor" - compare definitions side by side with the headword page. Word entry
- This pair ranks #118,951 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "adapter" and "adaptor" also get mixed up with nearby pairs, the highest-scored neighbour is "adaptor vs adopter". 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 #118,951 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.