ridiculous (adj)

Do I look ridiculous in this hat?
Don't be so ridiculous! I can't possibly afford to stay in a hotel like that.
It's ridiculous to expect a two-year-old to be able to read!
The plan to build a rollercoaster on top of the skyscraper seemed utterly ridiculous.
Her explanation for being late was so ridiculous that nobody believed her.
Wearing a swimsuit in the snow is clearly a ridiculous idea.
The professor dismissed the student's ridiculous hypothesis with a gentle smile.