maisvsmauWhat's the difference?

Quick tell: mais is a adverb, mau is an adjective, so they fill different roles in a sentence.

Which to use

“mais” is an adverb and “mau” is an adjective - they look or sound alike but fill different roles in a sentence.

#23
“mais” frequency rank
#1,936
“mau” frequency rank
1959
confusion score

Side-by-Side Comparison

Feature mais mau
Definition avançadamente (designa aumento) que não é de boa qualidade, ruim

Where the eye mixes mais and mau

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
mais
3 ch
mau

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: mais is /mäjʃ/ while mau is /ˈmaw/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adverb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 1959, derived from the frequency rank of both members and their visual similarity.

mais is recorded at frequency rank #23, classified as anadv, pronounced /mäjʃ/. mau is at rank #1,936, tagged as anadj, pronounced /ˈmaw/.

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 1959, this pair ranks #73,564 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mais vs mau

Shared letters: am. Private to "mais": is. Private to "mau": u.

"mais" · 4 letters · shape CVVC  ·  "mau" · 3 letters · shape CVV

Known mistypes of this pair

  • maisamis · maiss · masi · mias · mmais

Frequently Asked Questions

Can "mais" and "mau" be used interchangeably?
No - they are not even the same part of speech. "mais" is an adverb and "mau" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "mais" or "mau"?
"mais" is the more common of the two: it sits at frequency rank #23 in our Portuguese list, against #1,936 for "mau". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list