plumb line
"plumb-line" is a 9-letter English headword indexed on PlainSpell.
The verdict
“plumb line” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 10
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A cord with a weight attached, used to produce a vertical line; a plummet.
| Property | Value |
|---|---|
| Headword | plumb line |
| Language | English |
| Part of speech | Noun |
| Letters | 10 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “plumb line” sits in English frequency
Rare enough to double-check
plumb line is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
plumb line doesn't appear in our generated misspelling index, since its letter pattern doesn't lend itself to common typo substitutions. No close-neighbour confusable shows up for this headword in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From Middle English plumblyne, equivalent to plumb + line. The correct English form is plumb line, spelled P-L-U-M-B- -L-I-N-E.
Definition
- 1A cord with a weight attached, used to produce a vertical line; a plummet.
- 2Any vertical reference line.
Etymology
From Middle English plumblyne, equivalent to plumb + line.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “plumb line”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-L-U-M-B- -L-I-N-E - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.