mauvsmiWhich spelling fits?

Quick tell: mau is a adjective, mi is a pronoun, so they fill different roles in a sentence.

Which to use

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

#1,936
“mau” frequency rank
#3,342
“mi” frequency rank
5278
confusion score

Side-by-Side Comparison

Feature mau mi
Definition que não é de boa qualidade, ruim mim

Where the eye mixes mau and mi

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

3 ch
mau
2 ch
mi

Visual trap between mau and mi

These two trip readers on the page rather than in the ear: mau is /ˈmaw/ while mi is /ˈmi/. 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 (adjective vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 5278, derived from the frequency rank of both members and their visual similarity.

mau is recorded at frequency rank #1,936, classified as anadj, pronounced /ˈmaw/. mi is at rank #3,342, tagged as apron, pronounced /ˈmi/.

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 5278, this pair ranks #69,369 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mau vs mi

Shared letters: m. Private to "mau": au. Private to "mi": i.

"mau" · 3 letters · shape CVV  ·  "mi" · 2 letters · shape CV

Frequently Asked Questions

Is swapping "mau" for "mi" ever safe?
No - they are not even the same part of speech. "mau" is an adjective and "mi" a pronoun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "mau" or "mi" show up more?
"mau" is the more common of the two: it sits at frequency rank #1,936 in our Portuguese list, against #3,342 for "mi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "mau" and "mi" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "mau" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mi" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #69,369 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "mau" and "mi" also get mixed up with nearby pairs, the highest-scored neighbour is "maa vs mi". Nearby pair

Confusion rank #69,369 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