tho vs to, What's the Difference?

Which to use

“tho” is an article and “to” is a particle - they look or sound alike but fill different roles in a sentence.

#3,588
“tho” frequency rank: #2
“to” frequency rank: 3590
confusion score

Side-by-Side Comparison

Feature	tho	to
Definition	The (plural form); those.	A particle used for marking the following verb as an infinitive.

Where the eye mixes tho and to

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

3 ch

tho

2 ch

Why the eye confuses tho with to

These two trip readers on the page rather than in the ear: tho is /ðəʊ/ while to is /tuː/. 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 (article vs particle), which is usually the fastest check. Our composite confusion score for this pair is 3590, derived from the frequency rank of both members and their visual similarity.

tho is recorded at frequency rank #3,588, classified as anarticle, pronounced /ðəʊ/. to is at rank #2, tagged as aparticle, pronounced /tuː/.

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 3590, this pair ranks #521,669 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of tho vs to

Shared letters: ot. Private to "tho": h. Private to "to": -.

"tho" · 3 letters · shape CCV · "to" · 2 letters · shape CV

Frequently Asked Questions

Can "tho" and "to" be used interchangeably?

No - they are not even the same part of speech. "tho" is an article and "to" a particle, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "tho" or "to"?

"to" is the more common of the two: it sits at frequency rank #2 in our English list, against #3,588 for "tho". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

Full dictionary entry for "tho" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "to" - compare definitions side by side with the headword page. Word entry
This pair ranks #521,669 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"tho" and "to" also get mixed up with nearby pairs, the highest-scored neighbour is "Taf vs tho". Nearby pair

Confusion rank #521,669 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.