Which to use
“plug” and “plumb” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #5,726
- “plug” frequency rank
- #32,124
- “plumb” frequency rank
- 37850
- confusion score
Side-by-Side Comparison
| Feature | plug | plumb |
|---|---|---|
| Definition | A pronged connecting device which fits into a mating socket, especially an electrical one. | A little mass of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction. |
Where the eye mixes plug and plumb
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: plug vs plumb
A purely visual mix-up. plug (/plʌɡ/) and plumb (/plʌm/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 37850, derived from the frequency rank of both members and their visual similarity.
plug is recorded at frequency rank #5,726, classified as anoun, pronounced /plʌɡ/. plumb is at rank #32,124, tagged as anoun, pronounced /plʌm/.
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 37850, this pair ranks #290,930 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of plug vs plumb
Shared letters: lpu. Private to "plug": g. Private to "plumb": bm.
"plug" · 4 letters · shape CCVC · "plumb" · 5 letters · shape CCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "plug" and "plumb" be used interchangeably?
Frequency check: "plug" vs "plumb" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "plug" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "plumb" - compare definitions side by side with the headword page. Word entry
- This pair ranks #290,930 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "plug" and "plumb" also get mixed up with nearby pairs, the highest-scored neighbour is "plumb vs plumes". 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 #290,930 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.