deadpan

adjective

1. deliberately impassive in manner

- deadpan humor

Similar word(s): incommunicative, uncommunicative, expressionless, impassive, unexpressive

adverb

1. without betraying any feeling

- she told the joke deadpan

noun

1. A style of comedic delivery in which something humourous is said or done while not exhibiting a change in emotion or facial expression.

verb

1. To express (oneself) in an impassive or expressionless manner.