Significados de so unsubstantial en inglés

I didn't dare to hold out any hope based on so unsubstantial a theory.

There is something so unsubstantial about most of them.

Strange that a heart so insensible should first be touched by something so unsubstantial as a dream; but so it was.

So unsubstantial and shadowy are they, that a lady, on seeing them for the first time, declared them to be "the ghosts of gooseberries."

'I should have thought you could be only a very distant relation of anything so unsubstantial,' said Arthur, with a laugh.