反覆

Verb

 * 1) to go back and forth; to be changeable; to be full of changes
 * 2) to recur;  to relapse
 * 3) to go back on one's word; to back out
 * 1) to go back on one's word; to back out

Adverb

 * 1) again and again; repeatedly; time and time again

Noun

 * 1) reversal; relapse