What does vum mean?
“Vum” is an onomatopoeic interjection that represents the low hum or rumble of a motor vehicle. Its sound suggests a heavy engine running or a vehicle approaching, although it can also evoke the noise of a motorcycle or other fast-moving machine. In sentences, it often appears in a repeated form such as “vum, vum,” allowing the sound itself to become part of the narrative. The word is informal and chiefly expressive rather than technical: speakers use it for vividness, atmosphere, or comic effect instead of simply identifying a particular vehicle. It is also related in function to “vroom,” but “vum” tends to suggest a deeper, steadier mechanical rumble, while “vroom” evokes speed. Although uncommon in contemporary conversation, “vum” remains useful for rendering engine noises vividly in speech and writing.
interjectionAn interjection imitating the low hum or rumble of a motor vehicle, especially as the vehicle approaches or speeds up.
- An interjection imitating the low hum or rumble of a motor vehicle.
"The motorcycle came around the corner with a loud vum, and the children scrambled out of its path."
"A truck rattled past the house with a deep vum."
"“Vum, vum,” went the little car as it came over the hill."
“Vum” captures the low mechanical hum of a motor before it becomes a full-throated vroom.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of vum
“Vum” is a 20th-century English onomatopoeic formation, created to imitate a low humming or rumbling sound. It belongs to a large family of English sound-words that reproduce mechanical noises through vowel sounds and repeated consonants. Its closest semantic relative is “vroom,” another English imitation of a vehicle's movement, but “vum” more specifically conveys a hum or rumble.
How vum is actually used
This is an informal, onomatopoeic interjection, chiefly used for the sound of a motor vehicle. It is relatively uncommon in modern English.
Easily confused with vum
“Vum” imitates a vehicle's hum or rumble, whereas “vroom” more specifically imitates the sound of a vehicle accelerating or moving rapidly.