Home›Browse›P›put on an actput on an actOur editors are putting together more complete content — check back in about 20 minutesput on an actput on an act — verbverb1. to behave in a way that is not genuine, pretending to feel or be something1.verbDefinitionto behave in a way that is not genuine, pretending to feel or be somethingExampleShe wasn't really upset; she was just putting on an act.