at vs ATR, What's the Difference?

Which to use

“at” is a preposition and “ATR” is a noun - they look or sound alike but fill different roles in a sentence.

#21
“at” frequency rank: #46,320
“ATR” frequency rank: 46341
confusion score

Side-by-Side Comparison

Feature	at	ATR
Definition	In, near, or in the general vicinity of (a particular place).	Initialism of advanced tongue root.

Letter map: at vs ATR

Shared letters muted; letters that set at and ATR apart highlighted. Shared run: 2.

2 ch

3 ch

ATR

Grammar separator: at vs ATR

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: at is apreposition and ATRanoun. On the page they differ by 1 extra letter(s) - “at” sits inside “ATR”. Our composite confusion score for this pair is 46341, derived from the frequency rank of both members and their visual similarity.

at is recorded at frequency rank #21, classified as aprep, pronounced /æt/. ATR is at rank #46,320, tagged as anoun.

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 46341, this pair ranks #212,714 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of at vs ATR

Shared letters: at. Private to "at": -. Private to "ATR": r.

"at" · 2 letters · shape VC · "ATR" · 3 letters · shape VCC

Frequently Asked Questions

Is swapping "at" for "ATR" ever safe?

No - they are not even the same part of speech. "at" is a preposition and "ATR" a noun, so a sentence built for one is usually ungrammatical with the other.

In ordinary English text, does "at" or "ATR" show up more?

"at" is the more common of the two: it sits at frequency rank #21 in our English list, against #46,320 for "ATR". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "at" and "ATR". Here's where to go from here.

Full dictionary entry for "at" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ATR" - compare definitions side by side with the headword page. Word entry
This pair ranks #212,714 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"at" and "ATR" also get mixed up with nearby pairs, the highest-scored neighbour is "Asta vs ATR". Nearby pair

Confusion rank #212,714 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.