that'll be the day
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English
Etymology
Originally referring to a significant day in the future regarded as worth waiting for.[1]
Pronunciation
- (Received Pronunciation) IPA(key): /ˌðætl̩ biː ðə ˈdeɪ/
- (General American) IPA(key): /ˌðætl̩ bi ðə ˈdeɪ/
Audio (General Australian): (file)
Phrase
- (originally Australia, New Zealand, idiomatic, informal) Said in reply to something that one believes will never happen.
- Synonym: that'll be the frosty Friday
- I’m going to get into work on time today. — That’ll be the day!
Translations
said in reply to something that one believes will never happen
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See also
- a cold day in hell
- a week from next Tuesday
- until the cows come home
- when hell freezes over
- when pigs fly
References
- ^ “that’ll (also that will) be the day, phrase” under “day, n.”, in OED Online
, Oxford, Oxfordshire: Oxford University Press, September 2023; “that will be the day, phrase” under “day, n.”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
