忡 chōng a sad Origin Definitions Defs Strokes Stroke Words Sentences Sents 忧心忡忡 yōuxīnchōngchōng deeply worried deeply worried and sick at heart怔忡 zhēngchōng palpitations the state of the heart palpitating with fear or anxiety Sources Frequency data MTSU Chinese text computingSUBTLEX-CH