undreamed-of
adjective/ʌnˈdriːmd ɒv/
/ʌnˈdriːmd ʌv/
(also undreamt-of
/ʌnˈdremt ɒv/
/ʌnˈdremt ʌv/
especially in British English)- much more or much better than you thought was possible
- undreamed-of success
Check pronunciation:
undreamed-of