tervstioTell them apart

Quick tell: ter is a verb, tio is a noun, so they fill different roles in a sentence.

Which to use

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

#60
“ter” frequency rank
#2,211
“tio” frequency rank
2271
confusion score

Side-by-Side Comparison

Feature ter tio
Definition acompanhado de verbo no particípio regular, indica ação passada irmão da mãe ou do pai

Where the eye mixes ter and tio

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

3 ch
ter
3 ch
tio

Look-alike desk: ter vs tio

These two trip readers on the page rather than in the ear: ter is /ˈteɹ/ while tio is /ti.u/ [t͡ʃiu̯], [tiu̯]. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 2271, derived from the frequency rank of both members and their visual similarity.

ter is recorded at frequency rank #60, classified as averb, pronounced /ˈteɹ/. tio is at rank #2,211, tagged as anoun, pronounced /ti.u/ [t͡ʃiu̯], [tiu̯].

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 2271, this pair ranks #73,163 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ter vs tio

Shared letters: t. Private to "ter": er. Private to "tio": io.

"ter" · 3 letters · shape CVC  ·  "tio" · 3 letters · shape CVV

Frequently Asked Questions

Can "ter" and "tio" be used interchangeably?
No - they are not even the same part of speech. "ter" is a verb and "tio" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ter" or "tio"?
"ter" is the more common of the two: it sits at frequency rank #60 in our Portuguese list, against #2,211 for "tio". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "ter" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tio" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #73,163 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ter" and "tio" also get mixed up with nearby pairs, the highest-scored neighbour is "tio vs tufo". Nearby pair

Confusion rank #73,163 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