Verb
let slip (third-person singular simple present lets slip, present participle letting slip, simple past and past participle let slip)
(transitive, idiomatic) To divulge a secret, as by accident or mistake.
He finally let slip that they plan to take over the business.
We are masters of the unsaid words, but slaves of those we let slip out. Winston Churchill
Cry, 'Havoc and let slip the dogs of war. William Shakespeare
All the opportunities you let slip by! The idea, the inspiration just doesn´t come fast enough. Instead of being open, you´re closed up tight. That´s the worst sin of all - the sin of omission. Simone de Beauvoir
What our leaders and pundits never let slip is that the terrorists - whatever else they might be - might also be rational human beings; which is to say that in their own minds they have a rational justification for their actions. William Blum
... as a rule of thumb, whenever there appears a plural, correct for a singular. Should I ever let slip a royal WE, put me out of my misery with a swift blow to the head. Nicole Krauss
One word let slip and four horses would fail to catch it. Japanese Proverb