She was perfectly aware that she had done an unheard-of thing.
He spoke as if three thousand dollars was an unheard-of sum, a fortune.
The priests are credited with unheard-of influence among the poor.
Dear me, what unheard-of sacrifices does it demand of humble fortunes to be Respectable!
Whence, then, these strange words, these unheard-of opinions?
He used to accompany ...