1.   Is it not about time to bring to a halt the silly idea which threatens the safety of Benefits Agency staff?

2.   It is a silly idea and he has botched it.

3.   Why do you allow such silly ideas to come into that head of hers?

4.   There was one way to scotch this silly idea.

5.   A silly idea?

6.   His silly little idea worked.

7.   I suggested opening before the work visa was granted, an incredibly silly idea.

8.   In the birthplace of tulipmania, people were ready to fork over money because, well, any silly idea could make a person a millionaire nowadays.

9.   No, what a silly idea, they surely say, as they switch off their daydreams and try to think good thoughts about tractors.