TheresavsthesesWhich spelling fits?

Quick tell: Theresa is a name, theses is a noun, so they fill different roles in a sentence.

Which to use

“Theresa” is a name and “theses” is a noun - they look or sound alike but fill different roles in a sentence.

#11,136
“Theresa” frequency rank
#22,243
“theses” frequency rank
33379
confusion score

Side-by-Side Comparison

Feature Theresa theses
Definition A female given name from Ancient Greek, variant of Teresa. plural of thesis

Letter map: Theresa vs theses

Shared letters muted; letters that set Theresa and theses apart highlighted. Shared run: 5.

7 ch
Theresa
6 ch
theses

Grammar separator: Theresa vs theses

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Theresa is aname and thesesanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 33379, derived from the frequency rank of both members and their visual similarity.

Theresa is recorded at frequency rank #11,136, classified as aname. theses is at rank #22,243, tagged as anoun, pronounced /ˈθiːsiːz/.

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 33379, this pair ranks #329,961 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Theresa vs theses

Shared letters: ehst. Private to "Theresa": ar. Private to "theses": -.

"Theresa" · 7 letters · shape CCVCVCV  ·  "theses" · 6 letters · shape CCVCVC

Known mistypes of this pair

  • Theresahteresa · tehresa · theersa · thereas · theressa · therresa · thersea · thheresa
  • theseshteses · tehses · theess · thesess · thesses · thheses · thsees · ttheses

Frequently Asked Questions

Do "Theresa" and "theses" mean the same thing in a sentence?
No - they are not even the same part of speech. "Theresa" is a name and "theses" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "Theresa" or "theses" show up more?
"Theresa" is the more common of the two: it sits at frequency rank #11,136 in our English list, against #22,243 for "theses". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "Theresa" and "theses".

  • Full dictionary entry for "Theresa" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "theses" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #329,961 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Theresa" and "theses" also get mixed up with nearby pairs, the highest-scored neighbour is "tenses vs theses". 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 #329,961 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