firmabavsfumabaTell them apart

Which to use

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

#32,217
“firmaba” frequency rank
#30,089
“fumaba” frequency rank
62306
confusion score

Side-by-Side Comparison

Feature firmaba fumaba
Definition Primera persona del singular (yo) del pretérito imperfecto de indicativo de firmar o de firmarse. Primera persona del singular (yo) del pretérito imperfecto de indicativo de fumar.

Where the eye mixes firmaba and fumaba

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. firmaba runs 7 letters (CVCCVCV) against fumaba's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.

7 ch
firmaba
6 ch
fumaba

Look-alike desk: firmaba vs fumaba

A purely visual mix-up. firmaba ([fiɾˈmaβ̞a]) and fumaba ([fuˈmaβ̞a]) 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 62306, derived from the frequency rank of both members and their visual similarity.

firmaba is recorded at frequency rank #32,217, classified as averb, pronounced [fiɾˈmaβ̞a]. fumaba is at rank #30,089, tagged as averb, pronounced [fuˈmaβ̞a].

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 62306, this pair ranks #52,498 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of firmaba vs fumaba

Shared letters: abfm. Private to "firmaba": ir. Private to "fumaba": u.

"firmaba" · 7 letters · shape CVCCVCV  ·  "fumaba" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • firmaba ← ffirmaba · fimraba · firamba · firmaab · firmabba · firmava · firmbaa · firmmaba
  • fumaba ← ffumaba · fmuaba · fuamba · fumaab · fumabba · fumava · fumbaa · fummaba

Frequently Asked Questions

Is swapping "firmaba" for "fumaba" ever safe?
No. They are said differently ([fiɾˈmaβ̞a] versus [fuˈmaβ̞a]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "firmaba" vs "fumaba" - which ranks higher?
"fumaba" is the more common of the two: it sits at frequency rank #30,089 in our Spanish list, against #32,217 for "firmaba". 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 "firmaba" and "fumaba" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "firmaba" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fumaba" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #52,498 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "firmaba" and "fumaba" also get mixed up with nearby pairs, the highest-scored neighbour is "firmaba vs firmaría". 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 #52,498 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