Definition

1. Adverb (colloquial):
   • Categorically, flatly, outright: Used to emphasize a complete, absolute, and often blunt denial, refusal, or disappearance. It intensifies the action, suggesting it is done without a trace of hesitation or doubt.
   • To vanish without a trace: Describes something disappearing completely and suddenly.

Usage Examples

• Adverb:
  • Nó đánh vỡ cái lọ mà cứ chối bay biến. (He broke the vase but keeps denying it outright.)
  • Tôi hỏi về khoản tiền đó, anh ta từ chối bay biến. (I asked about that sum of money, and he refused flatly.)
• Verb phrase (describing disappearance):
  • Nghe tiếng cảnh sát, bọn trộm bay biến hết. (Hearing the police, the thieves vanished without a trace.)

Advanced Usage

• The phrase is often used in informal or emphatic speech to convey frustration or strong emphasis on the absoluteness of an action, particularly denial.
• It can function idiomatically to modify verbs of negation (chối - deny, từ chối - refuse) or verbs of disappearance.

Variants and Related Words

• Bay (v): to fly; to vanish quickly.
• Biến (v): to disappear, to vanish. The combination "bay biến" is an alliterative compound that reinforces the meaning.

Synonyms

• Categorically: without qualification; absolutely.
• Flatly: in a direct and definite way, especially in refusal.
• Outright: altogether; completely.
• To vanish into thin air: to disappear completely.

Related Idioms

• Chối bay chối biến: an even more emphatic, reduplicative form meaning "to deny strenuously and absolutely."
  • Bị bắt quả tang nhưng hắn vẫn chối bay chối biến. (Caught red-handed, but he still denied it strenuously.)

1. Like blazes, like hell
   • Chối bay biến
     To deny like blazes (like hell)