疯 (w)

(fēng) insane; mad; wild

疯子 (w)

(fēngzi) madman; lunatic

疯牛病 (w)

(fēngniúbìng) mad cow disease (bovine spongiform encephalopathy)

疯犬 (w)

(fēngquǎn) mad dog; rabid dog

疯狂 (w)

(fēngkuáng) madness; extreme popularity

疯疯癫癫 (w)

(fēngfengdiāndiān) deranged; erratic

疯瘫 (w)

(fēngtān) paralysis; also 癱瘓|瘫痪[tan1 huan4]

疯癫 (w)

(fēngdiān) insane; crazy