Definition of "brooding" []

• Broody; incubating eggs by sitting on them. (adjective)
• Deeply or seriously thoughtful. (adjective)
• Present participle of brood. (verb)
• A spell of brooding; the time when someone broods. (noun)

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• "Then he stood there and stared after it for a long moment, his expression brooding."
• "Still, he speculated wistfully that his newfound cheerfulness was not his authentic self, which he described as brooding and creative."
• "At such times he was remarkably taciturn, and would sit in brooding silence or go almost immediately to bed."