okayvsonlyWhat's the difference?

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

Which to use

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

#930
“okay” frequency rank
#79
“only” frequency rank
1009
confusion score

Side-by-Side Comparison

Feature okay only
Definition Alternative spelling of OK. Alone in a category.

Where the eye mixes okay and only

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

4 ch
okay
4 ch
only

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: okay is /ˌəʊˈkeɪ/ while only is /ˈəʊn.li/. 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 1009, derived from the frequency rank of both members and their visual similarity.

okay is recorded at frequency rank #930, classified as anoun, pronounced /ˌəʊˈkeɪ/. only is at rank #79, tagged as anadj, pronounced /ˈəʊn.li/.

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 1009, this pair ranks #528,313 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of okay vs only

Shared letters: oy. Private to "okay": ak. Private to "only": ln.

"okay" · 4 letters · shape VCVV  ·  "only" · 4 letters · shape VCCV

Known mistypes of this pair

  • okaykoay · oaky · okayy · okkay · okya
  • onlynoly · olny · onlly · onlyy · onnly · onyl

Frequently Asked Questions

Can "okay" and "only" be used interchangeably?
No - they are not even the same part of speech. "okay" is a noun and "only" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "okay" or "only"?
"only" is the more common of the two: it sits at frequency rank #79 in our English list, against #930 for "okay". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list