dog Idioms

the most important person

My brother is top dog in his football club.

to divert attention from something that is bad

I had to wag the dog so that he does not find out what I was doing this morning.

to become bad

Our street used to be nice, but it's really gone to the dogs.

To be very sick.

You should not go on holiday with him. He seemed to be as sick as a dog, according to his doctor.