to make the explosive vocal sounds characteristically expressing amusement, mirth, joy, or derision
to influence or bring (somebody) to a specified state by laughter
They laughed themselves silly
(+ at) to ridicule or make fun of (somebody or something)
be laughing
informal to be successful or fortunate
laugh on the other side of one's face
to be embarrassed after feeling confident or proud
laugh up one's sleeve
to be secretly amused
laugher noun
laughing adj
laughingly adv
[Old English hliehhan]