fisvsFPWhich spelling fits?

Quick tell: fis is a verb, FP is an abbrev, so they fill different roles in a sentence.

Which to use

“fis” is a verb and “FP” is an abbrev - they look or sound alike but fill different roles in a sentence.

#37,094
“fis” frequency rank
#24,507
“FP” frequency rank
61601
confusion score

Side-by-Side Comparison

Feature fis FP
Definition Primera persona del singular (je) del pretérito perfecto simple de indicativo de faire. Sigla de Formación Profesional.

Where the eye mixes fis and FP

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
fis
2 ch
FP

Look-alike desk: fis vs FP

These two trip readers on the page rather than in the ear: fis is [fi] while FP is [ˈfp]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs abbrev), which is usually the fastest check. Our composite confusion score for this pair is 61601, derived from the frequency rank of both members and their visual similarity.

fis is recorded at frequency rank #37,094, classified as averb, pronounced [fi]. FP is at rank #24,507, tagged as anabbrev, pronounced [ˈfp].

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 61601, this pair ranks #54,895 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of fis vs FP

Shared letters: f. Private to "fis": is. Private to "FP": p.

"fis" · 3 letters · shape CVC  ·  "FP" · 2 letters · shape CC

Frequently Asked Questions

Do "fis" and "FP" mean the same thing in a sentence?
No - they are not even the same part of speech. "fis" is a verb and "FP" an abbrev, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "fis" or "FP" show up more?
"FP" is the more common of the two: it sits at frequency rank #24,507 in our Spanish list, against #37,094 for "fis". 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 "fis" and "FP" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "fis" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "FP" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #54,895 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "fis" and "FP" also get mixed up with nearby pairs, the highest-scored neighbour is "filos vs fis". Nearby pair

Confusion rank #54,895 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