Definition

1. Onomatopoeia:

   • The sound of something moving swiftly through the air: "vù" imitates the sound produced by an object cutting quickly through the air, like wind or a bird.
   • The sound of a machine running or buzzing: When reduplicated as "vù vù", it often describes a continuous humming, buzzing, or whirring sound from a machine or engine.

2. Adverb:

   • Very quickly, swiftly: Used to describe an action performed with great speed, akin to the sound of something rushing by.
   • Severely, very much (swollen): Used after verbs like "sưng" (to swell) to indicate a high degree or severity of the condition.

Usage Examples

• As an onomatopoeia:

  • Gió thổi vù qua cửa sổ. (The wind blew swiftly/with a whoosh past the window.)
  • Chiếc máy bay lao đi vù vù. (The airplane zoomed away with a roaring sound.)

• As an adverb (speed):

  • Nó chạy vù về nhà. (He/she ran very quickly home.)
  • Chiếc xe máy phóng vù một cái đã mất hút. (The motorbike sped away in a flash and disappeared.)

• As an adverb (degree - swollen):

  • Sau khi bị ong đốt, mặt anh ấy sưng vù lên. (After being stung by a bee, his face swelled up badly.)
  • Vết thương bị nhiễm trùng, sưng vù. (The wound got infected and became severely swollen.)

Advanced Usage

• "vù vù": The reduplicated form intensifies the sound, suggesting a continuous, repetitive, or powerful humming, buzzing, or rushing noise.
  • Động cơ máy phát điện chạy vù vù suốt đêm. (The generator engine ran with a constant loud hum all night.)
  • Cánh quạt quay vù vù. (The fan blades spun with a whirring sound.)

Variants and Related Words

• Vút (verb): To whiz, to streak, to shoot upwards/forwards swiftly, often with a whistling sound. It emphasizes the trajectory more than the sound.
  • Mũi tên vút đi. (The arrow whizzed away.)
• Vun vút (adverb): Describes something moving extremely fast, often with a repeated or continuous whizzing sound.
  • Những chiếc lá bay vun vút trong gió. (The leaves flew swiftly and whistling in the wind.)

Synonyms

• Ầm ầm (onomatopoeia/adverb): With a roaring, rumbling sound (e.g., thunder, large vehicles).
• Phù phù (onomatopoeia): With a puffing or panting sound (e.g., breath, steam).
• Nhanh như chớp (idiom): As fast as lightning (for speed).

Related Phrases (Phrasal Verbs)

(Note: "vù" is primarily an onomatopoeia/adverb and does not form phrasal verbs in the same way as verbs do. Its usage is typically within descriptive phrases.) - Chạy vù đi: To run off swiftly. - Thổi vù qua: To blow past with a whoosh. - Sưng vù lên: To swell up badly.

Related Idioms

• Nhanh như vù: (As fast as a "vù") - An idiom emphasizing extreme speed, comparing it to the swift sound/action of "vù".
  • Cậu ấy chạy nhanh như vù. (He runs incredibly fast.)

verb

1. swollen