one in a million
a chance that is extremely unlikely:
Don't worry - the chances of anything going wrong are one in a million.
Thesaurus: synonyms and related words
Impossible and improbable
- apt
- be out of the question idiom
- beggar
- beggar belief/description idiom
- castle
- dream
- fat
- fat chance idiom
- goodbye to sth idiom
- I should be so lucky! idiom
- impossible
- improbable
- lucky
- million
- no way idiom
- snowball
- there's no danger of that! idiom
- unlikely
- untenable
- you should be so lucky! idiom
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You can also find related words, phrases, and synonyms in the topics:
Chance and randomness