复发 fùfā HSK7 to recur Origin Definitions Defs Strokes Stroke Words Sentences Sents 旧病复发 jiùbìngfùfā to have a relapse to have a recurrence of an old illness; to relapse into one's old bad habits or repeat the same old mistakes旧疾复发 jiùjífùfā to have a relapse to have a recurrence of an old illness; to suffer from a relapse of a medical condition or an old habit.