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

Dark clouds were brooding over the city.

He brooded over the mistake he made.

In the days of doubt, in the days of painful brooding over the fate of my fatherland you are my only support, my only solace, oh great, mighty, true and free Russian language!

An impressive silence broods over the monstrous structure where such multitudes of men and women were wont to assemble in other days.

Then fury spurred their courage, and behold, / As ravening wolves, when darkness hides the day, / Stung with mad fire of famine uncontrolled, / Prowl from their dens, and leave the whelps to stay, / With jaws athirst and gaping for the prey. / So to sure death, amid the darkness there, / Where swords, and spears, and foemen bar the way, / Into the centre of the town we fare. / Night with her shadowy cone broods o'er the vaulted air.

To arms I call my comrades, and defy / the loathsome brood to battle.

The hen has been brooding its eggs for a week.

You are not brooding and existing in your own head.

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