let the cat out of the bag
['spill the beans', 'talk', 'tattle', 'blab', 'peach', 'babble', 'sing', 'babble out', 'blab out', 'unwrap ', 'disclose ', 'let on ', 'bring out ', 'reveal ', 'discover ', 'expose ', 'divulge ', 'impart ', 'break ', 'give away ', 'let out ', 'keep quiet ']