Which to use
“stag” and “STI” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #21,077
- “stag” frequency rank
- #26,266
- “STI” frequency rank
- 47343
- confusion score
Side-by-Side Comparison
| Feature | stag | STI |
|---|---|---|
| Definition | An adult male deer, especially a red deer and especially one in high adulthood versus a young adult. | Initialism of sexually transmitted infection (also S.T.I.). |
Letter map: stag vs STI
Shared letters muted; letters that set stag and STI apart highlighted. Shared run: 2.
Corpus notes: stag and STI
stag and STI are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 47343, derived from the frequency rank of both members and their visual similarity.
stag is recorded at frequency rank #21,077, classified as anoun, pronounced /stæɡ/. STI is at rank #26,266, tagged as anoun.
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 47343, this pair ranks #203,307 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of stag vs STI
Shared letters: st. Private to "stag": ag. Private to "STI": i.
"stag" · 4 letters · shape CCVC · "STI" · 3 letters · shape CCV
Known mistypes of this pair
- stag ← satg · sstag · stagg · stga · sttag · tsag
Frequently Asked Questions
Is swapping "stag" for "STI" ever safe?
Frequency check: "stag" vs "STI" - which ranks higher?
What to do next
You've compared "stag" and "STI". Here's where to go from here.
- Full dictionary entry for "stag" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "STI" - compare definitions side by side with the headword page. Word entry
- This pair ranks #203,307 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "stag" and "STI" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs STI". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #203,307 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.