1. thought deeply about something in a worried or unhappy way
Usage: past tense of brood
2. sat on eggs to hatch them
Usage: past tense of brood; used of birds

Examples

• She brooded over her mistakes all night.
• He brooded about the argument with his friend.
• The hen brooded her eggs for three weeks.
• After losing the game, the team brooded in silence.
• She brooded on what her teacher had said.
• The mother bird brooded patiently in her nest.
• He brooded over his future career choices.