No need to: khỏi + verb

Khỏi before a verb means "no need to": Khỏi lo! No need to worry! Em khỏi đón, anh đi taxi về. No need to pick me up, I'll take a taxi home. It's everyday Saigon speech, quicker and more relaxed than không cần.

Khỏi cần and khỏi phải mean the same. In Hà Nội people more often say khỏi phải or không cần.

Often the first half says what makes the second unnecessary: Mua vé trên mạng rồi, khỏi xếp hàng. We've bought the tickets online, so there's no need to queue.

On its own, Khỏi! or Thôi khỏi turns down an offer: "no need, don't bother". Among friends it sounds easy and warm. With someone older, Dạ, không cần đâu is the safer choice.

Don't mix it up with khỏi after a verb of leaving, as in ra khỏi nhà (leave the house), or with không khỏi in the news, "can't help feeling". Khỏi lo is "don't worry", but không khỏi lo lắng is "can't help worrying".