Which to use
“adaption” and “addition” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #40,104
- “adaption” frequency rank
- #1,037
- “addition” frequency rank
- 41141
- confusion score
Side-by-Side Comparison
| Feature | adaption | addition |
|---|---|---|
| Definition | Alternative form of adaptation. | The act of adding anything. |
Where the eye mixes adaption and addition
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.
Look-alike desk: adaption vs addition
A purely visual mix-up. adaption (/əˈdæpʃən/) and addition (/əˈdɪʃ.ən/) 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 41141, 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/. addition is at rank #1,037, tagged as anoun, pronounced /əˈdɪʃ.ən/.
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 41141, this pair ranks #261,161 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of adaption vs addition
Shared letters: adinot. Private to "adaption": p. Private to "addition": -.
"adaption" · 8 letters · shape VCVCCVVC · "addition" · 8 letters · shape VCCVCVVC
Known mistypes of this pair
Frequently Asked Questions
Do "adaption" and "addition" mean the same thing in a sentence?
Which is more common, "adaption" or "addition"?
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 "adaption" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "addition" - compare definitions side by side with the headword page. Word entry
- This pair ranks #261,161 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "adaption" and "addition" 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 #261,161 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.