What does thunk mean?
Thunk is an informal English word most often used for a dull, heavy sound, such as the noise made by a book falling onto a desk or a foot striking a wooden floor. As a noun, it can also denote an idea or thought in casual speech, as in having a sudden thunk about a problem. As a verb, thunk means to make this kind of sound. The word is especially useful because it conveys a blunt, relatively low-impact quality more vividly than general terms such as noise or sound. Its use is common in informal writing and conversation rather than formal technical prose. Although thunk resembles think in spelling, the two words have different meanings and pronunciations: thunk is pronounced with the vowel sound in cup, while think has the vowel sound in the word kit. The word is also imitative in origin, created to reproduce the sound of a heavy impact.
A dull, heavy sound made when something strikes a surface; informally, an idea or thought.
"The impact was followed by a deep thunk from the empty crate."
The thought or idea sense is informal and is less common than the sound sense.
To make a dull, heavy sound by striking or colliding with something.
"The gate thunked shut as the wind pushed against it."
Usually informal and used to describe a sound that is blunt, heavy, or hollow.
The standard plural of the noun, used for separate sounds or, informally, separate ideas.
"The impacts produced a series of heavy thunks."
Thunk is an onomatopoeia: the word itself was made to sound like a heavy, dull impact.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does thunk come from?
Thunk is an English imitative formation, developed to represent a dull, heavy sound. It belongs to a broad tradition of English sound words such as thud and thump, but it does not have a securely established cognate family outside English. Its development is independent of the Germanic root behind think, despite the two words having similar modern spellings.
Related word forms
How thunk is actually used
Thunk is informal. Its sound sense is common in descriptions of impacts and movement, while the idea or thought sense is chiefly informal and usually used as a noun.
Easily confused with thunk
Thunk is pronounced /θʌŋk/ and refers to a sound or, informally, an idea, whereas think is pronounced /θɪŋk/ and means to use your mind to consider something.
A thunk is a dull, heavy impact sound, while a thump can be a somewhat sharper sound produced by a blow.