<p><strong>Verb</strong></p><ul><li>(used with object) to reveal indiscreetly and thoughtlessly: They blabbed my confidences to everyone.</li><li>(used without object) to talk or chatter indiscreetly or thoughtlessly: Don't confide in him, because he blabs.</li></ul><p><strong>Noun</strong></p><ul><li>idle, indiscreet chattering.</li><li>a person who blabs; blabbermouth.</li></ul>