thaïvsthatWhat's the difference?

Quick tell: thaï is a adjective, that is a conjunction, so they fill different roles in a sentence.

Which to use

“thaï” is an adjective and “that” is a conjunction - they look or sound alike but fill different roles in a sentence.

#21,484
“thaï” frequency rank
#5,506
“that” frequency rank
26990
confusion score

Side-by-Side Comparison

Feature thaï that
Definition Relatif aux langues du groupe thaï, ou aux populations qui parlent ces langues. Que.

Where the eye mixes thaï and that

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

4 ch
thaï
4 ch
that

Why the eye confuses thaï with that

These two trip readers on the page rather than in the ear: thaï is \taj\ while that is \ðət\. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - ï in “thaï” becomes t in “that”, and the parts of speech differ too (adjective vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 26990, derived from the frequency rank of both members and their visual similarity.

thaï is recorded at frequency rank #21,484, classified as anadj, pronounced \taj\. that is at rank #5,506, tagged as aconj, pronounced \ðət\.

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 26990, this pair ranks #331,660 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of thaï vs that

Shared letters: aht. Private to "thaï": ï. Private to "that": -.

"thaï" · 4 letters · shape CCVC  ·  "that" · 4 letters · shape CCVC

Known mistypes of this pair

  • thathtat · taht · thatt · thhat · thta · tthat

Frequently Asked Questions

Can "thaï" and "that" be used interchangeably?
No - they are not even the same part of speech. "thaï" is an adjective and "that" a conjunction, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "thaï" or "that" show up more?
"that" is the more common of the two: it sits at frequency rank #5,506 in our French list, against #21,484 for "thaï". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "thaï" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "that" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #331,660 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "thaï" and "that" also get mixed up with nearby pairs, the highest-scored neighbour is "tak vs thaï". 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 #331,660 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list