松口 sōngkǒu to let go Definitions Defs Origin Strokes Stroke Words Sentences Sents sōngkǒu to let go 松 鬆 sōng verbadjective to loosen to slacken or relax; to untie; to let go; to release口 kǒu noun mouth mouth of a person or animal; (bound form) oralsōngkǒu to relent 松 鬆 sōng verbadjective to loosen to slacken or relax; to untie; to let go; to release口 kǒu nounverb speech speech; words; one's tone of voice or accent