masvsmathWhich spelling fits?

Quick tell: mas is a conjunction, math is an adjective, so they fill different roles in a sentence.

Which to use

“mas” is a conjunction and “math” is an adjective - they look or sound alike but fill different roles in a sentence.

#25
“mas” frequency rank
#31,869
“math” frequency rank
31894
confusion score

Side-by-Side Comparison

Feature mas math
Definition conjunção adversativa, indica clara oposição entre ideias bom

Letter map: mas vs math

Shared letters muted; letters that set mas and math apart highlighted. Shared run: 2.

3 ch
mas
4 ch
math

Grammar separator: mas vs math

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: mas is aconjunction and mathanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 31894, derived from the frequency rank of both members and their visual similarity.

mas is recorded at frequency rank #25, classified as aconj, pronounced /ˈmɐʃ/. math is at rank #31,869, tagged as anadj.

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 31894, this pair ranks #36,060 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mas vs math

Shared letters: am. Private to "mas": s. Private to "math": ht.

"mas" · 3 letters · shape CVC  ·  "math" · 4 letters · shape CVCC

Known mistypes of this pair

  • mathamth · maht · mathh · matth · mmath · mtah

Frequently Asked Questions

Is swapping "mas" for "math" ever safe?
No - they are not even the same part of speech. "mas" is a conjunction and "math" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "mas" or "math"?
"mas" is the more common of the two: it sits at frequency rank #25 in our Portuguese list, against #31,869 for "math". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "mas" and "math". Here's where to go from here.

  • Full dictionary entry for "mas" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "math" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #36,060 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "mas" and "math" also get mixed up with nearby pairs, the highest-scored neighbour is "maa vs math". 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 #36,060 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