Englishئاساسىي لۇغەت
unheard-of
Universal Words
adjective
that has never been known or done; very unusual:
He'd dyed his hair, which was almost unheard-of in the 1960s. * Home computers are now used on a scale unheard-of a few years ago. * It is almost unheard-of for a new band to be offered such a deal.
