that'll be the day

Definition from Wiktionary, the free dictionary
Jump to navigation Jump to search

English[edit]

Pronunciation[edit]

  • (file)

Phrase[edit]

that'll be the day!

  1. (idiomatic) Said in reply to something that one believes will never happen.
    I’m going to get into work on time today.That’ll be the day!

Translations[edit]

See also[edit]