ThaisvstheismWhich spelling fits?

Which to use

“Thais” and “theism” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#42,943
“Thais” frequency rank
#47,959
“theism” frequency rank
90902
confusion score

Side-by-Side Comparison

Feature Thais theism
Definition plural of Thai Belief in the existence of at least one deity.

Letter map: Thais vs theism

Shared letters muted; letters that set Thais and theism apart highlighted. Shared run: 4. Thais runs 5 letters (CCVVC) against theism's 6 (CCVVCC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
Thais
6 ch
theism

Spelling & dictionary notes on Thais vs theism

Thais and theism 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 90902, derived from the frequency rank of both members and their visual similarity.

Thais is recorded at frequency rank #42,943, classified as anoun. theism is at rank #47,959, tagged as anoun, pronounced /ˈθiː.ɪz.əm/.

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 90902, this pair ranks #3,776 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Thais vs theism

Shared letters: hist. Private to "Thais": a. Private to "theism": em.

"Thais" · 5 letters · shape CCVVC  ·  "theism" · 6 letters · shape CCVVCC

Known mistypes of this pair

  • Thais ← htais · tahis · thaiss · thasi · thhais · thias · tthais
  • theism ← hteism · tehism · theims · theismm · theissm · thesim · thheism · thiesm

Frequently Asked Questions

Is swapping "Thais" for "theism" ever safe?
No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "Thais" vs "theism" - which ranks higher?
"Thais" is the more common of the two: it sits at frequency rank #42,943 in our English list, against #47,959 for "theism". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "Thais" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "theism" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #3,776 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Thais" and "theism" also get mixed up with nearby pairs, the highest-scored neighbour is "tass vs Thais". 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 #3,776 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