ajar vs ASA, What's the Difference?

Which to use

“ajar” is an adverb and “ASA” is a name - they look or sound alike but fill different roles in a sentence.

#48,584
“ajar” frequency rank: #16,175
“ASA” frequency rank: 64759
confusion score

Side-by-Side Comparison

Feature	ajar	ASA
Definition	Slightly turned or opened.	Initialism of Acoustical Society of America.

Letter map: ajar vs ASA

Shared letters muted; letters that set ajar and ASA apart highlighted. Shared run: 2.

4 ch

ajar

3 ch

ASA

Role in the sentence - ajar and ASA

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ajar is anadverb and ASAaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 64759, derived from the frequency rank of both members and their visual similarity.

ajar is recorded at frequency rank #48,584, classified as anadv, pronounced /əˈd͡ʒɑː/. ASA is at rank #16,175, tagged as aname.

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 64759, this pair ranks #76,121 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of ajar vs ASA

Shared letters: a. Private to "ajar": jr. Private to "ASA": s.

"ajar" · 4 letters · shape VCVC · "ASA" · 3 letters · shape VCV

Known mistypes of this pair

ajar ← aajr · ajarr · ajjar · ajra · jaar

Frequently Asked Questions

Can "ajar" and "ASA" be used interchangeably?

No - they are not even the same part of speech. "ajar" is an adverb and "ASA" a name, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "ajar" or "ASA"?

"ASA" is the more common of the two: it sits at frequency rank #16,175 in our English list, against #48,584 for "ajar". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "ajar" and "ASA". Here's where to go from here.

Full dictionary entry for "ajar" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ASA" - compare definitions side by side with the headword page. Word entry
This pair ranks #76,121 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"ajar" and "ASA" also get mixed up with nearby pairs, the highest-scored neighbour is "ajar vs Amari". 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 #76,121 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.