Definition

1. Adjective (slang):
   • Big-mouthed / Boastful: Describes a person who talks excessively, often in an exaggerated or bragging manner, making claims that may not be entirely true. It implies a lack of substance behind the words.
   • All talk, no action: Emphasizes that the person is more focused on speaking boastfully than on demonstrating real ability or following through.

Usage Examples

• Adjective:
  • Đừng tin hắn, hắn chỉ là kẻ béo mép thôi. (Don't believe him, he's just a big-mouthed braggart.)
  • Anh ta nói thì hay lắm, nhưng thực ra béo mép, chẳng làm được gì. (He talks a good game, but he's actually all talk and no action.)

Advanced Usage

• The term is inherently informal and often carries a critical or dismissive tone. It is used to call out someone's perceived arrogance or dishonesty in their speech.

Variants and Related Words

• Khoác lác (v): to brag, to boast.
  • Nó thích khoác lác về thành tích của mình. (He likes to brag about his achievements.)
• Nổ (v, slang): to "pop" or exaggerate; to talk big.
  • Cậu ấy toàn nổ về chuyện làm ăn. (He's always talking big about his business.)

Synonyms

• Braggart: a person who boasts.
• Windbag: a person who talks a lot but says little of value.
• Blowhard: a boastful or pompous person.

Related Idioms

• Nói như rồng leo, làm như mèo mửa: (To speak like a dragon climbing, to work like a cat vomiting) – A vivid idiom describing someone who is all talk and no action, closely related to the concept of .
  • Hứa hẹn đủ thứ nhưng nói như rồng leo, làm như mèo mửa. (Promises everything but is all talk and no action.)