1. Foolish or meaningless talk; nonsense.
Usage: Scottish and Northern English dialect; often plural
2. A person who talks foolishly or at tedious length.
Usage: Scottish and Northern English dialect; often used as a mild insult

1. To talk foolishly, at length, or without making sense.
Usage: Scottish and Northern English dialect

Examples

• He was talking complete blethers about his supposed business success.
• Don't listen to him—he's just a blethers who loves the sound of his own voice.
• She blethers on for hours without saying anything meaningful.
• The politician's speech was nothing but blethers and empty promises.
• He blethers away at every opportunity, boring everyone around him.
• Stop your blethers and get to the point!
• She blethers constantly about trivial matters.