可能

possible; probable; likely; potential; feasible; poss; liable; prospective; may; can; could; might; will; should; would; allow; maybe; like; perhaps; possibly; probably; perchance; potentially; possibility; likelihood; chance; probability; it is possible that; there is a chance that; by any chance

复发

recur; relapse; return; reoccur; reemerge; reappear