firstvsfishWhat's the difference?

Which to use

“first” and “fish” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#5,303
“first” frequency rank
#18,872
“fish” frequency rank
24175
confusion score

Side-by-Side Comparison

Feature first fish
Definition primeiro, numeral ordinal correspondente ao número 1 de peixe, relacionado a peixe:

Where the eye mixes first and fish

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

5 ch
first
4 ch
fish

Why the eye confuses first with fish

A purely visual mix-up. first (/ˈfɝst/) and fish (/ˈfɪʃ/) 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 24175, derived from the frequency rank of both members and their visual similarity.

first is recorded at frequency rank #5,303, classified as anadj, pronounced /ˈfɝst/. fish is at rank #18,872, tagged as anadj, pronounced /ˈfɪʃ/.

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 24175, this pair ranks #45,511 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of first vs fish

Shared letters: fis. Private to "first": rt. Private to "fish": h.

"first" · 5 letters · shape CVCCC  ·  "fish" · 4 letters · shape CVCC

Known mistypes of this pair

  • firstffirst · firrst · firsst · firstt · firts · fisrt · frist · ifrst
  • fishffish · fihs · fishh · fissh · fsih · ifsh

Frequently Asked Questions

Can "first" and "fish" be used interchangeably?
No. They are said differently (/ˈfɝst/ versus /ˈfɪʃ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Portuguese text, does "first" or "fish" show up more?
"first" is the more common of the two: it sits at frequency rank #5,303 in our Portuguese list, against #18,872 for "fish". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "first" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fish" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #45,511 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "first" and "fish" also get mixed up with nearby pairs, the highest-scored neighbour is "fish vs friso". 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 #45,511 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list