Blethered, which means to talk excessively or foolishly, has a range of antonyms that describe the opposite of this behavior. One antonym for blethered is silence, which refers to the complete absence of sound or noise. Another antonym is reticence, which implies a preference for remaining quiet and not sharing one's thoughts or feelings unnecessarily. In contrast to blethered, which suggests aimless chatter, lucidity conveys the meaning of being clear and easy to understand. Finally, discretion implies a degree of moderation and control over one's speech, in contrast to the lack of restraint or self-control that accompanies blethered.