Put your hands together

CLAP

Think of the sound made when showing approval at a performance or the action you might do after hearing a good joke.

"Put your hands together" is a common phrase encouraging applause, which is exactly what "clap" means. The clue plays on the literal action of clapping—bringing your hands together—to hint at the answer. It’s straightforward with no hidden wordplay, just a direct connection between the instruction and the word for the sound or motion it describes.