sirvsstaWhat's the difference?

Quick tell: sir is a noun, sta is an adjective, so they fill different roles in a sentence.

Which to use

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

#6,830
“sir” frequency rank
#14,015
“sta” frequency rank
20845
confusion score

Side-by-Side Comparison

Feature sir sta
Definition Señor, caballero. Forma del femenino de sto: «esta».

Where the eye mixes sir and sta

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

3 ch
sir
3 ch
sta

Look-alike desk: sir vs sta

These two trip readers on the page rather than in the ear: sir is /sɜː(ɹ)/ while sta is /ˈsta/. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 20845, derived from the frequency rank of both members and their visual similarity.

sir is recorded at frequency rank #6,830, classified as anoun, pronounced /sɜː(ɹ)/. sta is at rank #14,015, tagged as anadj, pronounced /ˈsta/.

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 20845, this pair ranks #257,523 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sir vs sta

Shared letters: s. Private to "sir": ir. Private to "sta": at.

"sir" · 3 letters · shape CVC  ·  "sta" · 3 letters · shape CCV

Frequently Asked Questions

Is swapping "sir" for "sta" ever safe?
No - they are not even the same part of speech. "sir" is a noun and "sta" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "sir" vs "sta" - which ranks higher?
"sir" is the more common of the two: it sits at frequency rank #6,830 in our Spanish list, against #14,015 for "sta". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "sir" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sta" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #257,523 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "sir" and "sta" also get mixed up with nearby pairs, the highest-scored neighbour is "sta vs stem". Nearby pair

Confusion rank #257,523 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list