unheard

It's exciting to think that this team just continues to do it, it's unheard of.

Beat It was crucial to the project - because it was designed to get Jackson played on US rock radio, an unheard of prospect in the heavily-segregated music industry of the 1980s.

Cases where babies have been accidentally swapped on maternity wards are practically unheard of in the UK.

It is not unheard of for Australian politicians to get free flight upgrades though they are required to declare such gifts, according to Reuters.

That night, Prof Fong and his team helped to transfer 17 critically ill patients to other NHS sites – an emergency measure unheard of outside the pandemic.