decaídovsdecididoTell them apart

Quick tell: decaído is a verb, decidido is an adjective, so they fill different roles in a sentence.

Which to use

“decaído” is a verb and “decidido” is an adjective - they look or sound alike but fill different roles in a sentence.

#44,678
“decaído” frequency rank
#2,392
“decidido” frequency rank
47070
confusion score

Side-by-Side Comparison

Feature decaído decidido
Definition Participio de decaer. Resuelto, terminante.

Where the eye mixes decaído and decidido

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. decaído runs 7 letters (CVCVVCV) against decidido's 8 (CVCVCVCV) - the length gap alone is often enough to separate them once you know to check it.

7 ch
decaído
8 ch
decidido

Look-alike desk: decaído vs decidido

These two trip readers on the page rather than in the ear: decaído is [d̪ekaˈið̞o] while decidido is [d̪esiˈð̞ið̞o]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 47070, derived from the frequency rank of both members and their visual similarity.

decaído is recorded at frequency rank #44,678, classified as averb, pronounced [d̪ekaˈið̞o]. decidido is at rank #2,392, tagged as anadj, pronounced [d̪esiˈð̞ið̞o].

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 47070, this pair ranks #122,121 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of decaído vs decidido

Shared letters: cdeo. Private to "decaído": aí. Private to "decidido": i.

"decaído" · 7 letters · shape CVCVVCV  ·  "decidido" · 8 letters · shape CVCVCVCV

Known mistypes of this pair

  • decidido ← dceidido · ddecidido · deccidido · decdiido · deciddido · deciddio · decididdo · decidiod

Frequently Asked Questions

Is swapping "decaído" for "decidido" ever safe?
No - they are not even the same part of speech. "decaído" is a verb and "decidido" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "decaído" or "decidido" show up more?
"decidido" is the more common of the two: it sits at frequency rank #2,392 in our Spanish list, against #44,678 for "decaído". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "decaído" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "decidido" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #122,121 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "decaído" and "decidido" also get mixed up with nearby pairs, the highest-scored neighbour is "decaído vs decid". 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 #122,121 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