for vs fui, What's the Difference?

Which to use

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

#220
“for” frequency rank: #365
“fui” frequency rank: 585
confusion score

Side-by-Side Comparison

Feature	for	fui
Definition	primeira pessoa do singular do futuro do subjuntivo do verbo ser	primeira pessoa do singular do pretérito perfeito simples do indicativo do verbo ir:

Where the eye mixes for and fui

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

3 ch

for

3 ch

fui

Why the eye confuses for with fui

A purely visual mix-up. for (/ˈfoɾ/) and fui (/ˈfuj/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 585, derived from the frequency rank of both members and their visual similarity.

for is recorded at frequency rank #220, classified as averb, pronounced /ˈfoɾ/. fui is at rank #365, tagged as averb, pronounced /ˈfuj/.

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 585, this pair ranks #75,089 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of for vs fui

Shared letters: f. Private to "for": or. Private to "fui": iu.

"for" · 3 letters · shape CVC · "fui" · 3 letters · shape CVV

Frequently Asked Questions

Do "for" and "fui" mean the same thing in a sentence?

No. They are said differently (/ˈfoɾ/ versus /ˈfuj/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

Which is more common, "for" or "fui"?

"for" is the more common of the two: it sits at frequency rank #220 in our Portuguese list, against #365 for "fui". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

Full dictionary entry for "for" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "fui" - compare definitions side by side with the headword page. Word entry
This pair ranks #75,089 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"for" and "fui" also get mixed up with nearby pairs, the highest-scored neighbour is "fern vs for". Nearby pair

Confusion rank #75,089 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.