A STAB IN THE BACK

A STAB IN THE BACK

An action or way of behaving that hurts someone who trusts you; an act of betrayal: I can’t believe that someone I had helped and supported would steal from me. It’s a real stab in the back.
BIG MOUTH

BIG MOUTH

MEANING: A person who talks a lot, especially about him- or herself, and who cannot keep secrets; an indiscreet or boastful person. EXAMPLE SENTENCES: He is/has such a big mouth. He went and opened his big mouth and told them the whole story. I’m sorry. I...