Which to use
“AD” is an adverb and “auld” is an adjective - they look or sound alike but fill different roles in a sentence.
- #1,779
- “AD” frequency rank
- #31,071
- “auld” frequency rank
- 32850
- confusion score
Side-by-Side Comparison
| Feature | AD | auld |
|---|---|---|
| Definition | Initialism of Anno Domini (borrowed from Latin); in the year of our Lord. | Old. |
Where the eye mixes AD and auld
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses AD with auld
These two trip readers on the page rather than in the ear: AD is /ˌeɪˈdi/ while auld is /oʊld/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adverb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 32850, derived from the frequency rank of both members and their visual similarity.
AD is recorded at frequency rank #1,779, classified as anadv, pronounced /ˌeɪˈdi/. auld is at rank #31,071, tagged as anadj, pronounced /oʊld/.
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 32850, this pair ranks #334,370 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of AD vs auld
Shared letters: ad. Private to "AD": -. Private to "auld": lu.
"AD" · 2 letters · shape VC · "auld" · 4 letters · shape VVCC
Known mistypes of this pair
- auld ← alud · audl · auldd · aulld · uald
Frequently Asked Questions
Is swapping "AD" for "auld" ever safe?
Which is more common, "AD" or "auld"?
Useful next steps
Eye-level mix-up between "AD" and "auld" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "AD" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "auld" - compare definitions side by side with the headword page. Word entry
- This pair ranks #334,370 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "AD" and "auld" also get mixed up with nearby pairs, the highest-scored neighbour is "alc vs auld". 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 #334,370 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.