ASC vs at, What's the Difference?

Which to use

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

#49,305
“ASC” frequency rank: #1,457
“at” frequency rank: 50762
confusion score

Side-by-Side Comparison

Feature	ASC	at
Definition	sigla de Agence Spatiale Canadienne, a Agência Espacial Canadiana	em, a

Letter map: ASC vs at

Shared letters muted; letters that set ASC and at apart highlighted. Shared run: 1.

3 ch

ASC

2 ch

Role in the sentence - ASC and at

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ASC is anabbrev and atapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 50762, derived from the frequency rank of both members and their visual similarity.

ASC is recorded at frequency rank #49,305, classified as anabbrev. at is at rank #1,457, tagged as aprep, pronounced \æt\.

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 50762, this pair ranks #14,198 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ASC vs at

Shared letters: a. Private to "ASC": cs. Private to "at": t.

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

Frequently Asked Questions

Do "ASC" and "at" mean the same thing in a sentence?

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

Frequency check: "ASC" vs "at" - which ranks higher?

"at" is the more common of the two: it sits at frequency rank #1,457 in our Portuguese list, against #49,305 for "ASC". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "ASC" and "at".

Full dictionary entry for "ASC" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "at" - compare definitions side by side with the headword page. Word entry
This pair ranks #14,198 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ASC" and "at" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ASC". Nearby pair

Confusion rank #14,198 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.