Which to use
“SST” is a noun and “sup” is a verb - they look or sound alike but fill different roles in a sentence.
- #43,385
- “SST” frequency rank
- #13,818
- “sup” frequency rank
- 57203
- confusion score
Side-by-Side Comparison
| Feature | SST | sup |
|---|---|---|
| Definition | Initialism of supersonic transport. | To sip; to take a small amount of food or drink into the mouth, especially with a spoon. |
Letter map: SST vs sup
Shared letters muted; letters that set SST and sup apart highlighted. Shared run: 1.
Part-of-speech tell for SST / sup
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: SST is anoun and supaverb. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 57203, derived from the frequency rank of both members and their visual similarity.
SST is recorded at frequency rank #43,385, classified as anoun. sup is at rank #13,818, tagged as averb, pronounced /sʌp/.
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 57203, this pair ranks #120,904 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of SST vs sup
Shared letters: s. Private to "SST": t. Private to "sup": pu.
"SST" · 3 letters · shape CCC · "sup" · 3 letters · shape CVC
Frequently Asked Questions
Is swapping "SST" for "sup" ever safe?
In ordinary English text, does "SST" or "sup" show up more?
After this comparison
Pair "SST" vs "sup" is on the table, pick a follow-up below.
- Full dictionary entry for "SST" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sup" - compare definitions side by side with the headword page. Word entry
- This pair ranks #120,904 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "SST" and "sup" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs SST". Nearby pair
Confusion rank #120,904 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.