tíovstosWhich spelling fits?

Which to use

“tío” and “tos” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#2,229
“tío” frequency rank
#9,550
“tos” frequency rank
11779
confusion score

Side-by-Side Comparison

Feature tío tos
Definition Hermano de la madre o del padre de una persona. Contracción espasmódica repentina y a veces repetitiva de la cavidad torácica que resulta en una liberación violenta del aire de los pulmones produciendo un sonido característico.

Where the eye mixes tío and tos

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
tío
3 ch
tos

Look-alike desk: tío vs tos

A purely visual mix-up. tío ([ˈt̪io]) and tos ([ˈt̪os]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 11779, derived from the frequency rank of both members and their visual similarity.

tío is recorded at frequency rank #2,229, classified as anoun, pronounced [ˈt̪io]. tos is at rank #9,550, tagged as anoun, pronounced [ˈt̪os].

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 11779, this pair ranks #293,919 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of tío vs tos

Shared letters: ot. Private to "tío": í. Private to "tos": s.

"tío" · 3 letters · shape CVV  ·  "tos" · 3 letters · shape CVC

Frequently Asked Questions

Can "tío" and "tos" be used interchangeably?
No. They are said differently ([ˈt̪io] versus [ˈt̪os]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "tío" vs "tos" - which ranks higher?
"tío" is the more common of the two: it sits at frequency rank #2,229 in our Spanish list, against #9,550 for "tos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "tío" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #293,919 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "tío" and "tos" also get mixed up with nearby pairs, the highest-scored neighbour is "tos vs toys". Nearby pair

Confusion rank #293,919 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