sing

[1]	chant , intone , carol , vocalize , trill , croon , pipe , chirp , warble , chorus , yodel
[2]	whistle , pipe , peep
[3]	tell , tattle , name names , (Slang) rat , snitch , squeal , blow the whistle , peach , spill the beans
[4]	whistle
[5]	spill the beans , let the cat out of the bag , talk , tattle , blab , peach , babble , babble out , blab out