duvsdudoWhich spelling fits?

Quick tell: du is a pronoun, dudo is a verb, so they fill different roles in a sentence.

Which to use

“du” is a pronoun and “dudo” is a verb - they look or sound alike but fill different roles in a sentence.

#5,609
“du” frequency rank
#4,239
“dudo” frequency rank
9848
confusion score

Side-by-Side Comparison

Feature du dudo
Definition Tú (pronombre de segunda persona singular familiar o informal) Primera persona del singular (yo) del presente de indicativo de dudar.

Where the eye mixes du and dudo

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

2 ch
du
4 ch
dudo

Visual trap between du and dudo

These two trip readers on the page rather than in the ear: du is [duː] while dudo is [ˈd̪uð̞o]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “du” sits inside “dudo”, and the parts of speech differ too (pronoun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 9848, derived from the frequency rank of both members and their visual similarity.

du is recorded at frequency rank #5,609, classified as apron, pronounced [duː]. dudo is at rank #4,239, tagged as averb, pronounced [ˈd̪uð̞o].

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 9848, this pair ranks #300,638 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of du vs dudo

Shared letters: du. Private to "du": -. Private to "dudo": o.

"du" · 2 letters · shape CV  ·  "dudo" · 4 letters · shape CVCV

Known mistypes of this pair

  • dudoddudo · dduo · duddo · duod · uddo

Frequently Asked Questions

Is swapping "du" for "dudo" ever safe?
No - they are not even the same part of speech. "du" is a pronoun and "dudo" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "du" or "dudo"?
"dudo" is the more common of the two: it sits at frequency rank #4,239 in our Spanish list, against #5,609 for "du". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "du" and "dudo" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "du" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dudo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #300,638 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "du" and "dudo" also get mixed up with nearby pairs, the highest-scored neighbour is "divo vs dudo". 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 #300,638 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list