/ ˈfuːlɪʃ; NAmE / adjective
1.
( of actions or behaviour ) not showing good sense or judgement
SYN silly , stupid :
She's just a vain, foolish woman.
I was foolish enough to believe what Jeff told me.
The accident was my fault— it would be foolish to pretend otherwise.
How could she have been so foolish as to fall in love with him?
a foolish idea / dream / mistake
It was a very foolish thing to do.
2.
[ not usually before noun ] made to feel or look silly and embarrassed
SYN silly , stupid :
I felt foolish and a failure.
He's afraid of looking foolish in front of his friends.
► fool·ish·ly adverb :
We foolishly thought that everyone would speak English.
Foolishly, I allowed myself to be persuaded to enter the contest.
► fool·ish·ness noun [ U ]:
Jenny had to laugh at her own foolishness.