Which to use
“addition” and “adoption” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #1,037
- “addition” frequency rank
- #5,384
- “adoption” frequency rank
- 6421
- confusion score
Side-by-Side Comparison
| Feature | addition | adoption |
|---|---|---|
| Definition | The act of adding anything. | The act of adopting. |
Where the eye mixes addition and adoption
Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. addition (VCCVCVVC) and adoption (VCVCCVVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between addition and adoption
A purely visual mix-up. addition (/əˈdɪʃ.ən/) 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 share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 6421, derived from the frequency rank of both members and their visual similarity.
addition is recorded at frequency rank #1,037, classified as anoun, pronounced /əˈdɪʃ.ən/. 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 6421, this pair ranks #511,493 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of addition vs adoption
Shared letters: adinot. Private to "addition": -. Private to "adoption": p.
"addition" · 8 letters · shape VCCVCVVC · "adoption" · 8 letters · shape VCVCCVVC
Known mistypes of this pair
Frequently Asked Questions
Do "addition" and "adoption" mean the same thing in a sentence?
Frequency check: "addition" vs "adoption" - which ranks higher?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "addition" 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 #511,493 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "addition" and "adoption" also get mixed up with nearby pairs, the highest-scored neighbour is "adaption vs adoption". 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 #511,493 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.