prolongavspropongaConfusable pair

Which to use

“prolonga” and “proponga” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#28,520
“prolonga” frequency rank
#23,561
“proponga” frequency rank
52081
confusion score

Side-by-Side Comparison

Feature prolonga proponga
Definition Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de prolongar o de prolongarse. Primera persona del singular (yo) del presente de subjuntivo de proponer.

Where the eye mixes prolonga and proponga

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.

8 ch
prolonga
8 ch
proponga

Why the eye confuses prolonga with proponga

A purely visual mix-up. prolonga ([pɾoˈlõŋga]) and proponga ([pɾoˈpõŋga]) 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 a single letter - l in “prolonga” becomes p in “proponga”. Our composite confusion score for this pair is 52081, derived from the frequency rank of both members and their visual similarity.

prolonga is recorded at frequency rank #28,520, classified as averb, pronounced [pɾoˈlõŋga]. proponga is at rank #23,561, tagged as averb, pronounced [pɾoˈpõŋga].

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 52081, this pair ranks #94,494 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of prolonga vs proponga

Shared letters: agnopr. Private to "prolonga": l. Private to "proponga": -.

"prolonga" · 8 letters · shape CCVCVCCV  ·  "proponga" · 8 letters · shape CCVCVCCV

Known mistypes of this pair

  • prolongaporlonga · pprolonga · prloonga · prollonga · prolnoga · prologna · prolonag · prolongga
  • propongaporponga · pproponga · proopnga · propnoga · propogna · proponag · propongga · proponnga

Frequently Asked Questions

Do "prolonga" and "proponga" mean the same thing in a sentence?
No. They are said differently ([pɾoˈlõŋga] versus [pɾoˈpõŋga]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "prolonga" or "proponga" show up more?
"proponga" is the more common of the two: it sits at frequency rank #23,561 in our Spanish list, against #28,520 for "prolonga". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "prolonga" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "proponga" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #94,494 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "prolonga" and "proponga" also get mixed up with nearby pairs, the highest-scored neighbour is "prolonga vs propongan". 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 #94,494 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