Which to use
“tha” is a verb and “tos” is a noun - they look or sound alike but fill different roles in a sentence.
- #43,181
- “tha” frequency rank
- #48,234
- “tos” frequency rank
- 91415
- confusion score
Side-by-Side Comparison
| Feature | tha | tos |
|---|---|---|
| Definition | Libérer. | Élève de première année à l’École polytechnique. |
Where the eye mixes tha and tos
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. tha (CCV) and tos (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Look-alike desk: tha vs tos
These two trip readers on the page rather than in the ear: tha is \tʰa˦\ while tos is \tos\. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 91415, derived from the frequency rank of both members and their visual similarity.
tha is recorded at frequency rank #43,181, classified as averb, pronounced \tʰa˦\. tos is at rank #48,234, tagged as anoun, pronounced \tos\.
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 91415, this pair ranks #3,867 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of tha vs tos
Shared letters: t. Private to "tha": ah. Private to "tos": os.
"tha" · 3 letters · shape CCV · "tos" · 3 letters · shape CVC
Frequently Asked Questions
Can "tha" and "tos" be used interchangeably?
In ordinary French text, does "tha" or "tos" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "tha" 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 #3,867 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "tha" and "tos" also get mixed up with nearby pairs, the highest-scored neighbour is "tif vs tos". Nearby pair
Confusion rank #3,867 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.