subirvssurWhich spelling fits?

Quick tell: subir is a verb, sur is a preposition, so they fill different roles in a sentence.

Which to use

“subir” is a verb and “sur” is a preposition - they look or sound alike but fill different roles in a sentence.

#3,878
“subir” frequency rank
#26
“sur” frequency rank
3904
confusion score

Side-by-Side Comparison

Feature subir sur
Definition Souffrir, supporter ou être soumis à quelque chose de pénible. Indique une position plus élevée.

Where the eye mixes subir and sur

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
subir
3 ch
sur

Why the eye confuses subir with sur

These two trip readers on the page rather than in the ear: subir is \sy.biʁ\ while sur is \syʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (verb vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 3904, derived from the frequency rank of both members and their visual similarity.

subir is recorded at frequency rank #3,878, classified as averb, pronounced \sy.biʁ\. sur is at rank #26, tagged as aprep, pronounced \syʁ\.

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 3904, this pair ranks #432,936 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of subir vs sur

Shared letters: rsu. Private to "subir": bi. Private to "sur": -.

"subir" · 5 letters · shape CVCVC  ·  "sur" · 3 letters · shape CVC

Known mistypes of this pair

  • subirsbuir · ssubir · subbir · subirr · subri · suibr · usbir

Frequently Asked Questions

Can "subir" and "sur" be used interchangeably?
No - they are not even the same part of speech. "subir" is a verb and "sur" a preposition, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "subir" vs "sur" - which ranks higher?
"sur" is the more common of the two: it sits at frequency rank #26 in our French list, against #3,878 for "subir". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "subir" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sur" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #432,936 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "subir" and "sur" also get mixed up with nearby pairs, the highest-scored neighbour is "sur vs suu". 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 #432,936 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list