The Oxford Thesaurus An A-Z Dictionary of Synonyms - singv.

1) chant, intone, carol, vocalize, trill, croon, pipe, chirp, warble; chorus; yodel: It was a wonderful spring day and Barbara felt like singing. Can you sing On the Road to Mandalay ? 2 whistle, pipe, peep: I have just bought a singing kettle. 3 tell, tattle, name names, Slang rat, snitch, squeal, blow the whistle, peach, spill the beans: They found out that Johnny had been singing to the cops about the bank job.