ThaisvstheirTell them apart

Quick tell: Thais is a noun, their is a determiner, so they fill different roles in a sentence.

Which to use

“Thais” is a noun and “their” is a determiner - they look or sound alike but fill different roles in a sentence.

#42,943
“Thais” frequency rank
#56
“their” frequency rank
42999
confusion score

Side-by-Side Comparison

Feature Thais their
Definition plural of Thai Belonging to, from, of, or relating to, them (plural).

Letter map: Thais vs their

Shared letters muted; letters that set Thais and their apart highlighted. Shared run: 3. Thais and their follow the identical consonant-vowel pattern (CCVVC). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
Thais
5 ch
their

Part-of-speech tell for Thais / their

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Thais is anoun and theiradeterminer. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 42999, derived from the frequency rank of both members and their visual similarity.

Thais is recorded at frequency rank #42,943, classified as anoun. their is at rank #56, tagged as adet, pronounced /ðɛə/.

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 42999, this pair ranks #244,154 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Thais vs their

Shared letters: hit. Private to "Thais": as. Private to "their": er.

"Thais" · 5 letters · shape CCVVC  ·  "their" · 5 letters · shape CCVVC

Known mistypes of this pair

  • Thais ← htais · tahis · thaiss · thasi · thhais · thias · tthais
  • their ← hteir · tehir · theirr · theri · thheir · ttheir

Frequently Asked Questions

Do "Thais" and "their" mean the same thing in a sentence?
No - they are not even the same part of speech. "Thais" is a noun and "their" a determiner, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "Thais" or "their" show up more?
"their" is the more common of the two: it sits at frequency rank #56 in our English list, against #42,943 for "Thais". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

You've compared "Thais" and "their". Here's where to go from here.

  • Full dictionary entry for "Thais" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "their" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #244,154 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Thais" and "their" 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 #244,154 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list