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that'll be the day
Definition
(Definition of that'll be the day from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
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You are looking at an entry to do with Impossible and improbable, but you might be interested in these topics from the Chance and possibility topic area:
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that was a game, meal, walk, etc. and a half! idiom
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that will do idiom
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that will never do idiom
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that will never do! idiom
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that will show sb idiom
- that'll be the day idiom
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that'll do nicely idiom
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that'll do! idiom
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that'll put hairs on your chest! idiom
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that'll teach sb idiom
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that's a matter of opinion idiom
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SMART Thesaurus: Impossible and improbable
Synonyms and related words:
- apt adjective (LIKELY)
- be out of the question idiom
- beggar belief/description idiom
- castles in the air idiom
- catch verb (NOTICE)
- don't hold your breath idiom 1
- doubt noun
- dream verb (HOPE)
- fat chance idiom
- fear noun
- goodbye to sth idiom
- I should be so lucky! idiom
- impossible adjective
- impossible noun
- improbable adjective
- not have a snowball's chance in hell idiom
- one in a million idiom
- pigs might fly idiom
- there's no danger of that! idiom
- unlikely adjective (NOT PROBABLE)
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