Which to use
“ATO” is a noun and “atta” is a contraction - they look or sound alike but fill different roles in a sentence.
- #34,783
- “ATO” frequency rank
- #29,174
- “atta” frequency rank
- 63957
- confusion score
Side-by-Side Comparison
| Feature | ATO | atta |
|---|---|---|
| Definition | Acronym of assisted take-off. | that's the; that's a |
Letter map: ATO vs atta
Shared letters muted; letters that set ATO and atta apart highlighted. Shared run: 2. ATO runs 3 letters (VCV) against atta's 4 (VCCV) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - ATO and atta
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ATO is anoun and attaacontraction. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 63957, derived from the frequency rank of both members and their visual similarity.
ATO is recorded at frequency rank #34,783, classified as anoun. atta is at rank #29,174, tagged as acontraction.
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 63957, this pair ranks #80,208 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of ATO vs atta
Shared letters: at. Private to "ATO": o. Private to "atta": -.
"ATO" · 3 letters · shape VCV · "atta" · 4 letters · shape VCCV
Known mistypes of this pair
- atta ← atat
Frequently Asked Questions
Is swapping "ATO" for "atta" ever safe?
Which is more common, "ATO" or "atta"?
What to do next
You've compared "ATO" and "atta". Here's where to go from here.
- Full dictionary entry for "ATO" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "atta" - compare definitions side by side with the headword page. Word entry
- This pair ranks #80,208 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "ATO" and "atta" also get mixed up with nearby pairs, the highest-scored neighbour is "Asta vs ATO". 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 #80,208 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.