Which to use
“tonic” is an adjective and “tonus” is a noun - they look or sound alike but fill different roles in a sentence.
- #45,350
- “tonic” frequency rank
- #35,755
- “tonus” frequency rank
- 81105
- confusion score
Side-by-Side Comparison
| Feature | tonic | tonus |
|---|---|---|
| Definition | Tonique, qualifie la première note d’un ton. | Tension, contraction légère et permanente, tenue des muscles. |
Where the spellings diverge
Shared letters are muted; the letters that actually set tonic and tonus apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: tonic is \tuˈnik\ while tonus is \tɔ.nys\. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 81105, derived from the frequency rank of both members and their visual similarity.
tonic is recorded at frequency rank #45,350, classified as anadj, pronounced \tuˈnik\. tonus is at rank #35,755, tagged as anoun, pronounced \tɔ.nys\.
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 81105, this pair ranks #19,470 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of tonic vs tonus
Shared letters: not. Private to "tonic": ci. Private to "tonus": su.
"tonic" · 5 letters · shape CVCVC · "tonus" · 5 letters · shape CVCVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "tonic" and "tonus" be used interchangeably?
Which is more common, "tonic" or "tonus"?
Remembering tonic vs tonus
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “tonic”; for a noun, it's “tonus”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “tonic” entry
- Browse more pairs most likely to be confused. Most confusable