不悪[ashikarazu] don't get me wrong, but ...
意識不明[ishikifumei] unconscious
一心不乱[isshinfuran] wholeheartedly
一定不変[itteifuhen] invariable
運動不足[undoubusoku] insufficient exercise

栄養不足[eiyoubusoku] malnutrition
過不足[kafusoku] excess or deficiency
回復不可能[kaifukufukanou] non-recoverable
気不味い[kimazui] unpleasant
健康不安[kenkoufuan] poor health

壊す[kowasu] to break
壊れる[kowareru] to be broken
壊れ物[kowaremono] fragile article
壊血病[kaiketsubyou] scurvy
壊滅[kaimetsu] destruction

壊乱[kairan] corruption (of order, customs, etc.)
壊疽[eso] gangrene
偶像破壊[guuzouhakai] iconoclasm
決壊[kekkai] break (rip) down
原子破壊機[genshihakaiki] cyclotron