dudavsdudadoWhich spelling fits?

Quick tell: duda is a noun, dudado is a verb, so they fill different roles in a sentence.

Which to use

“duda” is a noun and “dudado” is a verb - they look or sound alike but fill different roles in a sentence.

#656
“duda” frequency rank
#28,736
“dudado” frequency rank
29392
confusion score

Side-by-Side Comparison

Feature duda dudado
Definition Acción o efecto de dudar. Dificultad para elegir entre dos o más opciones, o suspensión de tal decisión. Participio de dudar.

Where the eye mixes duda and dudado

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

4 ch
duda
6 ch
dudado

Visual trap between duda and dudado

These two trip readers on the page rather than in the ear: duda is [ˈd̪uð̞a] while dudado is [d̪uˈð̞að̞o]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “duda” sits inside “dudado”, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 29392, derived from the frequency rank of both members and their visual similarity.

duda is recorded at frequency rank #656, classified as anoun, pronounced [ˈd̪uð̞a]. dudado is at rank #28,736, tagged as averb, pronounced [d̪uˈð̞að̞o].

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 29392, this pair ranks #217,233 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of duda vs dudado

Shared letters: adu. Private to "duda": -. Private to "dudado": o.

"duda" · 4 letters · shape CVCV  ·  "dudado" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • dudaddua · dduda · duad · dudda · udda
  • dudadodduado · ddudado · duaddo · dudaddo · dudaod · duddado · duddao · uddado

Frequently Asked Questions

Can "duda" and "dudado" be used interchangeably?
No - they are not even the same part of speech. "duda" is a noun and "dudado" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "duda" vs "dudado" - which ranks higher?
"duda" is the more common of the two: it sits at frequency rank #656 in our Spanish list, against #28,736 for "dudado". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "duda" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dudado" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #217,233 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "duda" and "dudado" also get mixed up with nearby pairs, the highest-scored neighbour is "dudado vs durando". 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 #217,233 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