Definition

1. Verb:
   • To go and to come back; to make a round trip: "khứ hồi" describes the action of traveling to a destination and then returning to the starting point. It emphasizes the complete journey of going there and back.

Usage

• "Khứ hồi" is primarily used to describe transportation tickets, fares, or the nature of a trip itself. It specifies that the ticket or journey is valid for both the outward and return legs.
• It functions as a verb but is very commonly used attributively (like an adjective) before nouns like "vé" (ticket) or "chuyến đi" (trip).

Usage Examples

• Verb (often used attributively):
  • Tôi mua vé máy bay khứ hồi từ Hà Nội vào Thành phố Hồ Chí Minh. (I bought a round-trip plane ticket from Hanoi to Ho Chi Minh City.)
  • Anh ấy đi khứ hồi trong một ngày. (He made a round trip in one day.)
  • Giá vé khứ hồi thường rẻ hơn hai vé một chiều. (The price of a round-trip ticket is usually cheaper than two one-way tickets.)

Advanced Usage

• "Đi khứ hồi": This is a common collocation that explicitly means "to go on a round trip."
  • Chuyến công tác yêu cầu phải đi khứ hồi trong ngày. (The business trip requires making a round trip within the day.)

Variants and Related Words

• Một chiều (adj/phrase): One-way. This is the direct antonym when referring to tickets or travel.
  • vé một chiều (one-way ticket)
• Khứ (literary/compound): To go (away). Found in compounds, not used alone in modern speech.
• Hồi (literary/compound): To return. Found in compounds, not used alone in this context.

Synonyms

• Đi về: To go and return. This is a more common, everyday phrase for the action.
  • Tôi đi về trong ngày. (I go and return within the day.) (Note: "Đi về" focuses more on the action, while "khứ hồi" often describes the ticket type or formal trip nature.)
• Đi và về: To go and come back. A direct, descriptive phrase.

Related Phrases

• Vé khứ hồi (noun phrase): Round-trip ticket. This is the most frequent collocation.
• Chuyến đi khứ hồi (noun phrase): Round trip.

Related Idioms

verb

1. to go and to come back