What does plonk mean?
Plonk is an informal word and sound effect describing the movement of a solid object, especially one that drops into water or falls heavily onto a hard surface. As a noun, it names the short, resonant thud or splash produced by the impact: a stone enters a pond with a plonk. As a verb, it describes the act of falling or being dropped with that sound, often adding a sense of weight, abruptness, or deliberate placement. The word is chiefly associated with British English but is also used and understood in American English. Its appeal lies in its vivid onomatopoeic quality: it conveys both the force of the movement and the acoustic impression it creates. Although the sound can be playful in descriptions of toys or bath toys, the word may also suggest that something heavy has been carelessly deposited. Plonk is therefore more specific and evocative than a general word such as drop, especially when the resulting sound matters.
A short, resonant sound made by an object falling into water or striking a hard surface.
"The bottle disappeared into the dark water with a hollow plonk."
Informal; especially common in British English.
To fall or be dropped with a short, heavy, resonant sound.
"She plonked the suitcase onto the floor."
Informal and chiefly British in usage; often suggests an abrupt movement or a heavy object.
Plural is used when referring to multiple sounds of this kind or multiple instances of dropping or falling with this sound.
"The stones landed in the pond with a series of loud plonks."
One perfect onomatopoeic plonk and a pebble is a stone: the word itself recreates the sound of the stone hitting water.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does plonk come from?
Plonk is an imitative formation, created to represent the sound of an object striking water or another hard surface. Its spelling reflects the abrupt, closed quality of the noise rather than a direct development from a longer word. The related sound noun plunk belongs to the same broad family of imitative expressions, though the two words have developed distinct emphases and uses.
Related word forms
How plonk is actually used
Informal and strongly associated with British English, though also understood in American English. It is especially evocative of a relatively heavy object making a short, resonant sound rather than a gentle splash or metallic clatter.
Easily confused with plonk
Plonk focuses on the characteristic sound of an object falling or landing, whereas plunk more often describes the action of dropping, placing, or firmly pressing something.