retiring

Here in my retiring room,

I knocked him down, and the police have him in custody; but I can tell you with the most absolute confidence that no possible connection will ever be traced between the gentleman upon whose front teeth I have barked my knuckles and the retiring mathematical coach, who is, I daresay, working out problems upon a blackboard ten miles away.

He has had the reputation of being a man of eccentric habits, secretive and retiring.

This mattered the less to her, as she was retiring by disposition, and very much absorbed, to all appearance, in her husband and her domestic duties.