sêniorvssenoWhich spelling fits?

Quick tell: sênior is a adjective, seno is a noun, so they fill different roles in a sentence.

Which to use

“sênior” is an adjective and “seno” is a noun - they look or sound alike but fill different roles in a sentence.

#11,558
“sênior” frequency rank
#48,110
“seno” frequency rank
59668
confusion score

Side-by-Side Comparison

Feature sênior seno
Definition velho; veterano; antigo em relação a um dos ângulos agudos de um triângulo retângulo, é o resultado da divisão do valor do cateto oposto a este ângulo pelo valor da hipotenusa

Letter map: sênior vs seno

Shared letters muted; letters that set sênior and seno apart highlighted. Shared run: 3. sênior runs 6 letters (CVCVVC) against seno's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
sênior
4 ch
seno

Role in the sentence - sênior and seno

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sênior is anadjective and senoanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 59668, derived from the frequency rank of both members and their visual similarity.

sênior is recorded at frequency rank #11,558, classified as anadj. seno is at rank #48,110, tagged as anoun, pronounced /ˈsenu/.

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 59668, this pair ranks #8,072 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of sênior vs seno

Shared letters: nos. Private to "sênior": irê. Private to "seno": e.

"sênior" · 6 letters · shape CVCVVC  ·  "seno" · 4 letters · shape CVCV

Known mistypes of this pair

  • seno ← esno · senno · seon · sneo · sseno

Frequently Asked Questions

Can "sênior" and "seno" be used interchangeably?
No - they are not even the same part of speech. "sênior" is an adjective and "seno" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "sênior" or "seno" show up more?
"sênior" is the more common of the two: it sits at frequency rank #11,558 in our Portuguese list, against #48,110 for "seno". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "sênior" vs "seno" is on the table, pick a follow-up below.

  • Full dictionary entry for "sênior" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "seno" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #8,072 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sênior" and "seno" also get mixed up with nearby pairs, the highest-scored neighbour is "seno vs sueño". 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 #8,072 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