緘口 jiānkǒu to keep one's mouth shut Origin Definitions Defs Strokes Stroke Words Sentences Sents 缄 緘 jiān to seal (bound form) to seal; to close; to keep silent as in 缄口 jiānkǒu or 缄默 jiānmò; to seal a letter (often used on envelopes following the sender's name)口 kǒu noun mouth mouth of a person or animal; (bound form) oral