What does plunging mean?
“Plunging” describes a sharp downward movement, either literally, as when a person or object falls steeply, or figuratively, as when prices, sales, confidence, or approval decline rapidly. It can also describe moving suddenly and forcefully into a place, activity, or situation. As an adjective, “plunging” is especially common in financial and economic contexts: “plunging prices” conveys both rapid decline and the severity of the change. The word can also refer to a very great depth, as in “the plunging cliffs” or “a shared plunge.” Its force comes from the combination of speed and abruptness; a slow decrease is ordinarily called a “fall,” “decline,” or “drop,” while a sudden dramatic decrease may be described as a “plummet.” In the idiom “take the plunge,” the word means to commit to something risky or unfamiliar. Overall, “plunging” evokes a steep, forceful, and often consequential downward movement.
To fall or descend steeply and rapidly; to move suddenly and forcefully into something.
"The eagle plunged toward the river, folding its wings as it descended."
The present participle is common in continuous constructions, though “plunged” is often preferred when reporting a completed decline.
Characterized by a sharp and continuous decline, or describing something of great depth.
"Falling sales have pushed the company into a financial crisis."
The financial sense is especially established in British and American usage, while the spatial sense occurs in literary and descriptive contexts.
Plunge ultimately comes from the idea of sounding a depth with a lead weight: what fell into the water was a plummet, giving us both “plunge” and “plummet.”
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does plunging come from?
The word “plunge” entered English in the late Middle English period through Old French forms related to “plonger.” These came from Medieval Latin “plumbare,” meaning to sink or sound with a lead weight, which in turn derives from Latin “plumbum,” “lead.” The same root produced English “plumb” and “plummet,” preserving the older association with lead as a weight used to measure depth.
Related word forms
How plunging is actually used
As a present participle, “plunging” usually appears in continuous constructions such as “prices are plunging,” although the simple past “plunged” is often preferred in formal reporting. As an adjective, it commonly precedes nouns such as “prices,” “sales,” or “confidence.” The phrase “take the plunge” is an established idiom meaning to commit decisively to an action or undertaking.