sobvssoloWhat's the difference?

Quick tell: sob is a preposition, solo is a noun, so they fill different roles in a sentence.

Which to use

“sob” is a preposition and “solo” is a noun - they look or sound alike but fill different roles in a sentence.

#320
“sob” frequency rank
#1,451
“solo” frequency rank
1771
confusion score

Side-by-Side Comparison

Feature sob solo
Definition abaixo, em baixo terra

Where the eye mixes sob and solo

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

3 ch
sob
4 ch
solo

Look-alike desk: sob vs solo

These two trip readers on the page rather than in the ear: sob is /ˈsob/ while solo is /ˈsɔ.lu/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (preposition vs noun), which is usually the fastest check. Our composite confusion score for this pair is 1771, derived from the frequency rank of both members and their visual similarity.

sob is recorded at frequency rank #320, classified as aprep, pronounced /ˈsob/. solo is at rank #1,451, tagged as anoun, pronounced /ˈsɔ.lu/.

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 1771, this pair ranks #73,733 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sob vs solo

Shared letters: os. Private to "sob": b. Private to "solo": l.

"sob" · 3 letters · shape CVC  ·  "solo" · 4 letters · shape CVCV

Known mistypes of this pair

  • solooslo · sloo · sollo · sool · ssolo

Frequently Asked Questions

Is swapping "sob" for "solo" ever safe?
No - they are not even the same part of speech. "sob" is a preposition and "solo" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sob" or "solo"?
"sob" is the more common of the two: it sits at frequency rank #320 in our Portuguese list, against #1,451 for "solo". 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 "sob" and "solo" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "sob" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "solo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #73,733 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sob" and "solo" also get mixed up with nearby pairs, the highest-scored neighbour is "soap vs solo". 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 #73,733 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