abrood
adv. C2 Proficiency abrood
adv. in a state of deep thought or worry. You use this when someone is sitting quietly and thinking about something serious.
adv. in a state of deep contemplation or anxious brooding. Archaic in modern usage; primarily found in historical or literary contexts.
He sat abrood in the corner of the room.
The old man sat abrood by the fire, his face hidden in the shadows of his hat.
The protagonist spent the entire evening abrood, his mind consumed by the weight of the secret he had just uncovered.
From Middle English abrod, equivalent to a- + brood.