ThomvsthumbWhich spelling fits?

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

Which to use

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

#22,527
“Thom” frequency rank
#7,071
“thumb” frequency rank
29598
confusion score

Side-by-Side Comparison

Feature Thom thumb
Definition A surname transferred from the given name. The shortest and thickest digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.

Letter map: Thom vs thumb

Shared letters muted; letters that set Thom and thumb apart highlighted. Shared run: 3.

4 ch
Thom
5 ch
thumb

Grammar separator: Thom vs thumb

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Thom is aname and thumbanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 29598, derived from the frequency rank of both members and their visual similarity.

Thom is recorded at frequency rank #22,527, classified as aname. thumb is at rank #7,071, tagged as anoun, pronounced /θʌm/.

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 29598, this pair ranks #361,634 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Thom vs thumb

Shared letters: hmt. Private to "Thom": o. Private to "thumb": bu.

"Thom" · 4 letters · shape CCVC  ·  "thumb" · 5 letters · shape CCVCC

Known mistypes of this pair

  • Thomhtom · thhom · thmo · thomm · tohm · tthom
  • thumbhtumb · thhumb · thmub · thubm · thumbb · thummb · tthumb · tuhmb

Frequently Asked Questions

Is swapping "Thom" for "thumb" ever safe?
No - they are not even the same part of speech. "Thom" is a name and "thumb" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Thom" vs "thumb" - which ranks higher?
"thumb" is the more common of the two: it sits at frequency rank #7,071 in our English list, against #22,527 for "Thom". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "Thom" and "thumb".

  • Full dictionary entry for "Thom" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "thumb" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #361,634 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Thom" and "thumb" also get mixed up with nearby pairs, the highest-scored neighbour is "Thom vs toma". 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 #361,634 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