until one is blue in the face

短语

发音

AU

释义与例句

adv.
  1. 1.

    For a hopelessly long time; used especially in respect to discussing, explaining, insisting, etc.

    习语

    Near-synonym: until the cows come home

    You can explain it until you're blue in the face, but he will never understand.

词源

By figurative extension from the concept of being literally out of breath (from talking so much, exerting oneself so much, and so on), which may sometimes cause one's face to look wan.

来源：wiktionary