firmenvsfirmoTell them apart

Which to use

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

#29,216
“firmen” frequency rank
#18,547
“firmo” frequency rank
47763
confusion score

Side-by-Side Comparison

Feature firmen firmo
Definition Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del presente de subjuntivo de firmar o de firmarse. Primera persona del singular (yo) del presente de indicativo de firmar.

Where the eye mixes firmen and firmo

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. firmen runs 6 letters (CVCCVC) against firmo's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
firmen
5 ch
firmo

Look-alike desk: firmen vs firmo

A purely visual mix-up. firmen ([ˈfiɾmẽn]) and firmo ([ˈfiɾmo]) 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 1 letter(s) in length. Our composite confusion score for this pair is 47763, derived from the frequency rank of both members and their visual similarity.

firmen is recorded at frequency rank #29,216, classified as averb, pronounced [ˈfiɾmẽn]. firmo is at rank #18,547, tagged as averb, pronounced [ˈfiɾmo].

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 47763, this pair ranks #118,254 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of firmen vs firmo

Shared letters: fimr. Private to "firmen": en. Private to "firmo": o.

"firmen" · 6 letters · shape CVCCVC  ·  "firmo" · 5 letters · shape CVCCV

Known mistypes of this pair

  • firmen ← ffirmen · fimren · firemn · firmenn · firmmen · firmne · firrmen · frimen
  • firmo ← ffirmo · fimro · firmmo · firom · firrmo · frimo · ifrmo

Frequently Asked Questions

Is swapping "firmen" for "firmo" ever safe?
No. They are said differently ([ˈfiɾmẽn] versus [ˈfiɾmo]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "firmen" or "firmo"?
"firmo" is the more common of the two: it sits at frequency rank #18,547 in our Spanish list, against #29,216 for "firmen". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "firmen" and "firmo" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "firmen" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "firmo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #118,254 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "firmen" and "firmo" also get mixed up with nearby pairs, the highest-scored neighbour is "farmer vs firmen". 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 #118,254 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