0 the quality of being unwise, stupid, or not showing good judgment: --
She has already apologised for her foolishness.
the foolishness of youth
By doing so, he has opened himself to charges of hypocrisy and foolishness.
Only the ideological foolishness of ultraliberalism and of misguided free trade remained intact.
After all, there is the old maxim, caveat emptor—it is impossible to protect everybody from his own foolishness.
They, however, are not to be blamed entirely, or even chiefly, for all the sorry wickedness and foolishness.
A journalist has got to tell the truth about wickedness and foolishness without fear or favour.
Such foolishness, widespread in many areas, would be deterred if people had to contribute to a sensible scheme.
I thought that he had espoused foolishness because he had been told to do so.
They cannot be dismantled; they will be buried in concrete—monuments to the foolishness of man for future generations.