preposterous
adjectiveUK /prɪˈpɒstərəs/
US /prɪˈpɑːstərəs/
So silly or wrong that it is hard to believe.
The idea that a cat could drive a car is preposterous.
RELATED WORDS
OTHER MEANINGS
2. Completely against what is reasonable or sensible.
It is preposterous to expect a child to run a marathon.
3. So strange or unnatural that it seems funny.
He wore a preposterous hat with a giant feather.
4. Contrary to nature or the usual order of things.
The story described a preposterous world where fish could fly.