Stop brooding.

A brood mare is a female horse used for breeding.

On the next day the weather was delightful, and the sun shone brightly on the green burdock leaves, so the mother duck took her young brood down to the water, and jumped in with a splash.

She brooded over the bullying done to her.

You are not brooding and existing in your own head.

He brooded over the mistake he made.

I was in my room, brooding over the missed opportunity.

Parts of the United States are being invaded by a mass brood of cicadas that emerges from the ground once every 17 years.

When you're finished brooding, come on over and apologize for your part in the argument.

Yet, silent as he was, I knew perfectly well what it was over which he was brooding.