Which to use
“adaption” and “adoption” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #40,104
- “adaption” frequency rank
- #5,384
- “adoption” frequency rank
- 45488
- confusion score
Side-by-Side Comparison
| Feature | adaption | adoption |
|---|---|---|
| Definition | Alternative form of adaptation. | The act of adopting. |
Where the eye mixes adaption and adoption
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.
Visual trap between adaption and adoption
A purely visual mix-up. adaption (/əˈdæpʃən/) and adoption (/əˈdɑp.ʃən/) 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 - a in “adaption” becomes o in “adoption”. Our composite confusion score for this pair is 45488, derived from the frequency rank of both members and their visual similarity.
adaption is recorded at frequency rank #40,104, classified as anoun, pronounced /əˈdæpʃən/. adoption is at rank #5,384, tagged as anoun, pronounced /əˈdɑp.ʃən/.
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 45488, this pair ranks #220,828 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of adaption vs adoption
Shared letters: adinopt. Private to "adaption": -. Private to "adoption": -.
"adaption" · 8 letters · shape VCVCCVVC · "adoption" · 8 letters · shape VCVCCVVC
Known mistypes of this pair
Frequently Asked Questions
Do "adaption" and "adoption" mean the same thing in a sentence?
Which is more common, "adaption" or "adoption"?
Useful next steps
Eye-level mix-up between "adaption" and "adoption" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "adaption" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "adoption" - compare definitions side by side with the headword page. Word entry
- This pair ranks #220,828 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "adaption" and "adoption" also get mixed up with nearby pairs, the highest-scored neighbour is "adaption vs adaptor". 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 #220,828 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.