o's vs oso, What's the Difference?

Which to use

“o's” is a noun and “oso” is an adverb - they look or sound alike but fill different roles in a sentence.

#30,902
“o's” frequency rank: #44,978
“oso” frequency rank: 75880
confusion score

Side-by-Side Comparison

Feature	o's	oso
Definition	plural of the letter o	Pronunciation spelling of also, representing Singapore English.

Where the spellings diverge

Shared letters are muted; the letters that actually set o's and oso apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

o's

3 ch

oso

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: o's is /əʊz/ while oso is /ˈoːsoː/. 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 adverb), which is usually the fastest check. Our composite confusion score for this pair is 75880, derived from the frequency rank of both members and their visual similarity.

o's is recorded at frequency rank #30,902, classified as anoun, pronounced /əʊz/. oso is at rank #44,978, tagged as anadv, pronounced /ˈoːsoː/.

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 75880, this pair ranks #31,762 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of o's vs oso

Shared letters: os. Private to "o's": -. Private to "oso": -.

"o's" · 2 letters · shape VC · "oso" · 3 letters · shape VCV

Frequency comparison

o's#30,902

oso#44,978

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "o's" and "oso" be used interchangeably?

No - they are not even the same part of speech. "o's" is a noun and "oso" an adverb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "o's" or "oso"?

"o's" is the more common of the two: it sits at frequency rank #30,902 in our English list, against #44,978 for "oso". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering o's vs oso

The fastest way to pick the right one every time.

Check the role first: if you need a noun, it's “o's”; for an adverb, it's “oso”.
See each word in full, definition, IPA, etymology and its other confusables. Full “o's” entry
Browse more pairs most likely to be confused. Most confusable