Which to use
“added” is a verb and “adder” is a noun - they look or sound alike but fill different roles in a sentence.
- #701
- “added” frequency rank
- #41,977
- “adder” frequency rank
- 42678
- confusion score
Side-by-Side Comparison
| Feature | added | adder |
|---|---|---|
| Definition | simple past and past participle of add | Any snake. |
Where the eye mixes added and adder
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Visual trap between added and adder
These two trip readers on the page rather than in the ear: added is /ˈæd.əd/ while adder is /ˈædɚ/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - d in “added” becomes r in “adder”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 42678, derived from the frequency rank of both members and their visual similarity.
added is recorded at frequency rank #701, classified as averb, pronounced /ˈæd.əd/. adder is at rank #41,977, tagged as anoun, pronounced /ˈædɚ/.
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 42678, this pair ranks #247,068 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of added vs adder
Shared letters: ade. Private to "added": -. Private to "adder": r.
"added" · 5 letters · shape VCCVC · "adder" · 5 letters · shape VCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "added" and "adder" be used interchangeably?
Frequency check: "added" vs "adder" - which ranks higher?
Useful next steps
Eye-level mix-up between "added" and "adder" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "added" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "adder" - compare definitions side by side with the headword page. Word entry
- This pair ranks #247,068 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "added" and "adder" also get mixed up with nearby pairs, the highest-scored neighbour is "adder vs adverb". 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 #247,068 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.