Which to use
“Thad” is a name and “Thais” is a noun - they look or sound alike but fill different roles in a sentence.
- #33,452
- “Thad” frequency rank
- #42,943
- “Thais” frequency rank
- 76395
- confusion score
Side-by-Side Comparison
| Feature | Thad | Thais |
|---|---|---|
| Definition | A diminutive of the male given names Thaddeus or Thaddaeus, sometimes also used as a formal given name. | plural of Thai |
Letter map: Thad vs Thais
Shared letters muted; letters that set Thad and Thais apart highlighted. Shared run: 3. Thad runs 4 letters (CCVC) against Thais's 5 (CCVVC) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: Thad vs Thais
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Thad is aname and Thaisanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 76395, derived from the frequency rank of both members and their visual similarity.
Thad is recorded at frequency rank #33,452, classified as aname, pronounced /θæd/. Thais is at rank #42,943, 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 76395, this pair ranks #30,238 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of Thad vs Thais
Shared letters: aht. Private to "Thad": d. Private to "Thais": is.
"Thad" · 4 letters · shape CCVC · "Thais" · 5 letters · shape CCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "Thad" for "Thais" ever safe?
Frequency check: "Thad" vs "Thais" - which ranks higher?
After this comparison
You've compared "Thad" and "Thais". Here's where to go from here.
- Full dictionary entry for "Thad" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "Thais" - compare definitions side by side with the headword page. Word entry
- This pair ranks #30,238 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "Thad" and "Thais" also get mixed up with nearby pairs, the highest-scored neighbour is "Thais vs theism". 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 #30,238 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.