Which to use
“prolongar” and “propongan” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #21,451
- “prolongar” frequency rank
- #37,805
- “propongan” frequency rank
- 59256
- confusion score
Side-by-Side Comparison
| Feature | prolongar | propongan |
|---|---|---|
| Definition | Hacer más largo espacialmente, alargar. | Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del presente de subjuntivo de proponer. |
Where the eye mixes prolongar and propongan
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. prolongar and propongan follow the identical consonant-vowel pattern (CCVCVCCVC). Same shape at a glance is often the real trap, independent of shared letters.
Look-alike desk: prolongar vs propongan
A purely visual mix-up. prolongar ([pɾolõŋˈgaɾ]) and propongan ([pɾoˈpõŋgãn]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 59256, derived from the frequency rank of both members and their visual similarity.
prolongar is recorded at frequency rank #21,451, classified as averb, pronounced [pɾolõŋˈgaɾ]. propongan is at rank #37,805, tagged as averb, pronounced [pɾoˈpõŋgãn].
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 59256, this pair ranks #63,309 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of prolongar vs propongan
Shared letters: agnopr. Private to "prolongar": l. Private to "propongan": -.
"prolongar" · 9 letters · shape CCVCVCCVC · "propongan" · 9 letters · shape CCVCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "prolongar" and "propongan" be used interchangeably?
Which is more common, "prolongar" or "propongan"?
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 "prolongar" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "propongan" - compare definitions side by side with the headword page. Word entry
- This pair ranks #63,309 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "prolongar" and "propongan" also get mixed up with nearby pairs, the highest-scored neighbour is "propongan vs provengan". 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 #63,309 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.