to play a practical joke on one―play a low trick on one
悪になる
a bad thing―(悪事なら)―an evil deed―a dark deed―a crime―(間違ったこと、不正なことなら)―a wrong―(宗教道徳上の罪悪なら)―a sin―a vice―(凶事なら)―an evil―a misfortune―a calamity―(いたずらなら)―harm―mischief―(過失なら)―a fault
to become worse―change for the worse―take a turn for the worse―deteriorate―(食物なら)―Pickles go bad―Eggs spoil―Meat or fish taints―Milk turns sour.
たちが悪いさま
the degree of wickedness of something or someone
the act of doing evil repeatedly
より悪くする
the condition of a plot being discovered
something which causes bad conditions