Deadpans are often associated with someone who maintains a blank expression while telling a joke or making a sarcastic comment. However, there are several synonyms that can be used to describe this type of behavior. One alternative word is stonewalls, which refers to someone who remains expressionless and unresponsive. Another word that can be used to describe deadpan humor is dry humor, as it often involves understatement, irony, and sarcasm without any visible emotion. Other words that can be used as synonyms for deadpan humor include poker-faced, impassive, and stoic, all of which imply a lack of emotion or expressiveness.