undovsUrduWhich spelling fits?

Quick tell: undo is a verb, Urdu is a name, so they fill different roles in a sentence.

Which to use

“undo” is a verb and “Urdu” is a name - they look or sound alike but fill different roles in a sentence.

#13,631
“undo” frequency rank
#20,807
“Urdu” frequency rank
34438
confusion score

Side-by-Side Comparison

Feature undo Urdu
Definition To reverse the effects of an action. Modern Standard Urdu, an Indo-Aryan language with native speakers mainly in Pakistan and North India. It is a standardized and Persianized version of Hindustani.

Where the eye mixes undo and Urdu

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
undo
4 ch
Urdu

Why the eye confuses undo with Urdu

These two trip readers on the page rather than in the ear: undo is /ʌnˈduː/ while Urdu is /ˈʊəˌduː/. 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 (verb vs name), which is usually the fastest check. Our composite confusion score for this pair is 34438, derived from the frequency rank of both members and their visual similarity.

undo is recorded at frequency rank #13,631, classified as averb, pronounced /ʌnˈduː/. Urdu is at rank #20,807, tagged as aname, pronounced /ˈʊəˌduː/.

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 34438, this pair ranks #320,778 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of undo vs Urdu

Shared letters: du. Private to "undo": no. Private to "Urdu": r.

"undo" · 4 letters · shape VCCV  ·  "Urdu" · 4 letters · shape VCCV

Known mistypes of this pair

  • undonudo · udno · unddo · unndo · unod
  • Urdurudu · udru · urddu · urrdu · urud

Frequently Asked Questions

Do "undo" and "Urdu" mean the same thing in a sentence?
No - they are not even the same part of speech. "undo" is a verb and "Urdu" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "undo" or "Urdu"?
"undo" is the more common of the two: it sits at frequency rank #13,631 in our English list, against #20,807 for "Urdu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "undo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Urdu" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #320,778 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "undo" and "Urdu" also get mixed up with nearby pairs, the highest-scored neighbour is "UHD vs Urdu". 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 #320,778 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list