fal vs foi, What's the Difference?

Which to use

“fal” is a noun and “foi” is a verb - they look or sound alike but fill different roles in a sentence.

#32,985
“fal” frequency rank: #26
“foi” frequency rank: 33011
confusion score

Side-by-Side Comparison

Feature	fal	foi
Definition	muro	terceira pessoa do singular do pretérito perfeito do indicativo do verbo ser

Where the spellings diverge

Shared letters are muted; the letters that actually set fal and foi apart are highlighted. They share 1 letter in sequence, which is exactly why the eye skips the difference.

3 ch

fal

3 ch

foi

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: fal is /ˈfɒl/ while foi is /ˈfoj/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 33011, derived from the frequency rank of both members and their visual similarity.

fal is recorded at frequency rank #32,985, classified as anoun, pronounced /ˈfɒl/. foi is at rank #26, tagged as averb, pronounced /ˈfoj/.

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 33011, this pair ranks #34,628 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fal vs foi

Shared letters: f. Private to "fal": al. Private to "foi": io.

"fal" · 3 letters · shape CVC · "foi" · 3 letters · shape CVV

Frequency comparison

fal#32,985

foi#26

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "fal" and "foi" be used interchangeably?

No - they are not even the same part of speech. "fal" is a noun and "foi" a verb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "fal" or "foi"?

"foi" is the more common of the two: it sits at frequency rank #26 in our Portuguese list, against #32,985 for "fal". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering fal vs foi

The fastest way to pick the right one every time.

Check the role first: if you need a noun, it's “fal”; for a verb, it's “foi”.
See each word in full, definition, IPA, etymology and its other confusables. Full “fal” entry
Browse more pairs most likely to be confused. Most confusable