忧心 yōuxīn troubled heart Origin Definitions Defs Strokes Stroke Words Sentences Sents 忧心忡忡 yōuxīnchōngchōng deeply worried deeply worried and sick at heart; care-laden or heavyhearted忧心如焚 yōuxīnrúfén burning with anxiety to be extremely worried or distressed, as if one's heart were on fire