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Definition unthinkable in British English

unthinkable adjective

adjective
/ʌnˈθɪŋkəb(ə)l/
Example

An agreement between the two countries was unthinkable.

Synonyms and related words
1.1

something that is impossible to imagine

Example

Could they do the unthinkable and actually win a match?

Synonyms and related words
Definition unthinkable in British English