Which to use
“them” is a pronoun and “thumb” is a noun - they look or sound alike but fill different roles in a sentence.
- #71
- “them” frequency rank
- #7,071
- “thumb” frequency rank
- 7142
- confusion score
Side-by-Side Comparison
| Feature | them | thumb |
|---|---|---|
| Definition | Those ones. | 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. |
Where the eye mixes them and thumb
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses them with thumb
These two trip readers on the page rather than in the ear: them is /ˈðɛm/ while thumb is /θʌm/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 7142, derived from the frequency rank of both members and their visual similarity.
them is recorded at frequency rank #71, classified as apron, pronounced /ˈðɛm/. 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 7142, this pair ranks #508,378 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of them vs thumb
Shared letters: hmt. Private to "them": e. Private to "thumb": bu.
"them" · 4 letters · shape CCVC · "thumb" · 5 letters · shape CCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "them" and "thumb" be used interchangeably?
Which is more common, "them" or "thumb"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "them" 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 #508,378 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "them" and "thumb" also get mixed up with nearby pairs, the highest-scored neighbour is "thumb vs Thun". 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 #508,378 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.