Which to use
“adaption” is a noun and “adaptive” is an adjective - they look or sound alike but fill different roles in a sentence.
- #40,104
- “adaption” frequency rank
- #12,721
- “adaptive” frequency rank
- 52825
- confusion score
Side-by-Side Comparison
| Feature | adaption | adaptive |
|---|---|---|
| Definition | Alternative form of adaptation. | Of, pertaining to, characterized by or showing adaptation; making or made fit or suitable. |
Where the eye mixes adaption and adaptive
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.
Visual trap between adaption and adaptive
These two trip readers on the page rather than in the ear: adaption is /əˈdæpʃən/ while adaptive is /əˈdæp.tɪv/. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 52825, 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/. adaptive is at rank #12,721, tagged as anadj, pronounced /əˈdæp.tɪv/.
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 52825, this pair ranks #153,904 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of adaption vs adaptive
Shared letters: adipt. Private to "adaption": no. Private to "adaptive": ev.
"adaption" · 8 letters · shape VCVCCVVC · "adaptive" · 8 letters · shape VCVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "adaption" for "adaptive" ever safe?
Frequency check: "adaption" vs "adaptive" - which ranks higher?
After this comparison
Eye-level mix-up between "adaption" and "adaptive" 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 "adaptive" - compare definitions side by side with the headword page. Word entry
- This pair ranks #153,904 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "adaption" and "adaptive" 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 #153,904 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.