prontovsprotoWhat's the difference?

Quick tell: pronto is a adjective, proto is an adverb, so they fill different roles in a sentence.

Which to use

“pronto” is an adjective and “proto” is an adverb - they look or sound alike but fill different roles in a sentence.

#1,294
“pronto” frequency rank
#35,741
“proto” frequency rank
37035
confusion score

Side-by-Side Comparison

Feature pronto proto
Definition que está acabado, terminado, concluído: por isso

Where the spellings diverge

Shared letters are muted; the letters that actually set pronto and proto apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.

6 ch
pronto
5 ch
proto

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: pronto is anadjective and protoanadverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 37035, derived from the frequency rank of both members and their visual similarity.

pronto is recorded at frequency rank #1,294, classified as anadj. proto is at rank #35,741, tagged as anadv, pronounced /ˈproto/ ouvir^(fonte ?).

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 37035, this pair ranks #29,665 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of pronto vs proto

Shared letters: oprt. Private to "pronto": n. Private to "proto": -.

"pronto" · 6 letters · shape CCVCCV  ·  "proto" · 5 letters · shape CCVCV

Known mistypes of this pair

  • prontopornto · ppronto · prnoto · pronnto · pronot · prontto · protno · prronto
  • protopproto · proot · protto · prroto · prtoo · rpoto

Frequency comparison

pronto#1,294
proto#35,741

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "pronto" and "proto" be used interchangeably?
No - they are not even the same part of speech. "pronto" is an adjective and "proto" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "pronto" or "proto"?
"pronto" is the more common of the two: it sits at frequency rank #1,294 in our Portuguese list, against #35,741 for "proto". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering pronto vs proto

The fastest way to pick the right one every time.

  • Check the role first: if you need an adjective, it's “pronto”; for an adverb, it's “proto”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “pronto” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list