What does plumbless mean?
Plumbless is a rare adjective describing something that has no plummet. A plummet is a weighted implement traditionally suspended on a line to sound the depth of water, establish a vertical reference, or test whether a surface is exactly plumb. In the most straightforward sense, plumbless means that the relevant weighted line or sounding device is absent. The term appears in specialist and older technical writing, where it distinguishes an incomplete or unequipped instrument from one fitted for measuring depth or vertical alignment. It is not normally used to describe a person, and it should not be confused with the unrelated idea of being inaccurate or unsteady, even though “plumb” can participate in expressions concerning vertical alignment. Because plumbless is uncommon in contemporary prose, its presence often gives a sentence a technical or historical character. Its transparent formation from “plumb” and the suffix “-less” makes its basic meaning readily understandable.
adjectiveHaving no plummet attached or available; specifically, lacking the weighted line used for sounding or testing depth.
- Lacking a plummet; having no weighted sounding line.
"Without a plummet, the sounding apparatus could not determine the depth of the water."
"The plumbless instrument could not be used to measure the depth of the channel."
"The technicians replaced the plumbless line with a properly weighted plummet."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of plumbless
Plumbless is formed within English from “plumb” and the suffix “-less,” meaning “without.” The word belongs to the same English word family as “plumb,” “plummet,” and “plumbing,” which are historically associated with lead and the Latin word plumbum.
How plumbless is actually used
This is a rare, chiefly technical or historical adjective rather than part of everyday standard English.