Pronunciation: (ded'pan"), [key]
—adj., adv., v., -panned, -pan•ning,
1. marked by or accomplished with a careful pretense of seriousness or calm detachment; impassive or expressionless: deadpan humor.
2. displaying no emotional or personal involvement: a deadpan style.
in a deadpan manner: He spoke his lines utterly deadpan.
to behave or perform in a deadpan manner.
—n. Also,dead' pan".
1. a face showing no expression.
2. a style of comedy that relies on the comedian's maintaining such a face.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.