Meaning

noun an actor who communicates entirely by gesture and facial expression

originFrom Middle English mummer, mommer, equivalent to mum + -er, perhaps conflating with Old French momeor (“jester, entertainer”), from mommer (“to wear a mask”), from momon (“mask”). Compare German Mumme (“mask”), 16th Century German mummen (“to disguise oneself”), Middle Dutch mommen, mummen (“to go about in a mask, to disguise”), Middle Low Saxon mommen (“to wear a mask, to disguise”), Dutch mom…

Etymology from Wiktionary, CC BY-SA 3.0