Which to use
“spi” is an adjective and “sus” is an adverb - they look or sound alike but fill different roles in a sentence.
- #49,369
- “spi” frequency rank
- #12,488
- “sus” frequency rank
- 61857
- confusion score
Side-by-Side Comparison
| Feature | spi | sus |
|---|---|---|
| Definition | Spirituel (au sens religieux). | Dessus. |
Where the eye mixes spi and sus
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. spi (CCV) and sus (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Look-alike desk: spi vs sus
These two trip readers on the page rather than in the ear: spi is \spi\ while sus is \sys\. 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 adverb), which is usually the fastest check. Our composite confusion score for this pair is 61857, derived from the frequency rank of both members and their visual similarity.
spi is recorded at frequency rank #49,369, classified as anadj, pronounced \spi\. sus is at rank #12,488, tagged as anadv, pronounced \sys\.
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 61857, this pair ranks #90,070 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of spi vs sus
Shared letters: s. Private to "spi": ip. Private to "sus": u.
"spi" · 3 letters · shape CCV · "sus" · 3 letters · shape CVC
Frequently Asked Questions
Can "spi" and "sus" be used interchangeably?
Which is more common, "spi" or "sus"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "spi" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sus" - compare definitions side by side with the headword page. Word entry
- This pair ranks #90,070 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "spi" and "sus" also get mixed up with nearby pairs, the highest-scored neighbour is "spi vs suu". Nearby pair
Confusion rank #90,070 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.