decidivsdecidirTell them apart

Which to use

“decidi” and “decidir” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#3,675
“decidi” frequency rank
#2,367
“decidir” frequency rank
6042
confusion score

Side-by-Side Comparison

Feature decidi decidir
Definition primeira pessoa do singular do pretérito perfeito do indicativo do verbo decidir determinar

Where the eye mixes decidi and decidir

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

6 ch
decidi
7 ch
decidir

Look-alike desk: decidi vs decidir

A purely visual mix-up. decidi (/de.sɪˈʤi/) and decidir (/dɨ.sɨ.ˈdiɾ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “decidi” sits inside “decidir”. Our composite confusion score for this pair is 6042, derived from the frequency rank of both members and their visual similarity.

decidi is recorded at frequency rank #3,675, classified as averb, pronounced /de.sɪˈʤi/. decidir is at rank #2,367, tagged as averb, pronounced /dɨ.sɨ.ˈdiɾ/.

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 6042, this pair ranks #68,483 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of decidi vs decidir

Shared letters: cdei. Private to "decidi": -. Private to "decidir": r.

"decidi" · 6 letters · shape CVCVCV  ·  "decidir" · 7 letters · shape CVCVCVC

Known mistypes of this pair

  • decididceidi · ddecidi · deccidi · decdii · deciddi · deciid · deicdi · edcidi
  • decidirdceidir · ddecidir · deccidir · decdiir · deciddir · decidirr · decidri · deciidr

Frequently Asked Questions

Is swapping "decidi" for "decidir" ever safe?
No. They are said differently (/de.sɪˈʤi/ versus /dɨ.sɨ.ˈdiɾ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "decidi" vs "decidir" - which ranks higher?
"decidir" is the more common of the two: it sits at frequency rank #2,367 in our Portuguese list, against #3,675 for "decidi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "decidi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "decidir" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #68,483 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "decidi" and "decidir" also get mixed up with nearby pairs, the highest-scored neighbour is "decade vs decidi". 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 #68,483 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list