ThaivsthisTell them apart

Quick tell: Thai is a adjective, this is a determiner, so they fill different roles in a sentence.

Which to use

“Thai” is an adjective and “this” is a determiner - they look or sound alike but fill different roles in a sentence.

#5,459
“Thai” frequency rank
#15
“this” frequency rank
5474
confusion score

Side-by-Side Comparison

Feature Thai this
Definition Of or pertaining to Thailand. The (thing) here (used in indicating something or someone nearby).

Where the eye mixes Thai and this

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
Thai
4 ch
this

Look-alike desk: Thai vs this

These two trip readers on the page rather than in the ear: Thai is /taɪ/ while this is /ðɪs/. 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 determiner), which is usually the fastest check. Our composite confusion score for this pair is 5474, derived from the frequency rank of both members and their visual similarity.

Thai is recorded at frequency rank #5,459, classified as anadj, pronounced /taɪ/. this is at rank #15, tagged as adet, pronounced /ðɪs/.

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 5474, this pair ranks #515,202 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Thai vs this

Shared letters: hit. Private to "Thai": a. Private to "this": s.

"Thai" · 4 letters · shape CCVV  ·  "this" · 4 letters · shape CCVC

Known mistypes of this pair

  • Thaihtai · tahi · thhai · thia · tthai
  • thishtis · thhis · thiss · thsi · tihs · tthis

Frequently Asked Questions

Can "Thai" and "this" be used interchangeably?
No - they are not even the same part of speech. "Thai" is an adjective and "this" a determiner, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "Thai" or "this"?
"this" is the more common of the two: it sits at frequency rank #15 in our English list, against #5,459 for "Thai". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "Thai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "this" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #515,202 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Thai" and "this" also get mixed up with nearby pairs, the highest-scored neighbour is "Thai vs Trav". 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 #515,202 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