Which to use
“doo” is a noun and “dug” is a verb - they look or sound alike but fill different roles in a sentence.
- #12,582
- “doo” frequency rank
- #8,784
- “dug” frequency rank
- 21366
- confusion score
Side-by-Side Comparison
| Feature | doo | dug |
|---|---|---|
| Definition | feces, particularly that of a dog. | simple past and past participle of dig (replacing earlier digged) |
Where the eye mixes doo and dug
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses doo with dug
These two trip readers on the page rather than in the ear: doo is /duː/ while dug is /dʌɡ/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 21366, derived from the frequency rank of both members and their visual similarity.
doo is recorded at frequency rank #12,582, classified as anoun, pronounced /duː/. dug is at rank #8,784, tagged as averb, pronounced /dʌɡ/.
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 21366, this pair ranks #424,434 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of doo vs dug
Shared letters: d. Private to "doo": o. Private to "dug": gu.
"doo" · 3 letters · shape CVV · "dug" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "doo" for "dug" ever safe?
Which is more common, "doo" or "dug"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "doo" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dug" - compare definitions side by side with the headword page. Word entry
- This pair ranks #424,434 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "doo" and "dug" also get mixed up with nearby pairs, the highest-scored neighbour is "doo vs dox". Nearby pair
Confusion rank #424,434 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.