deadly

形容词 deadly:

causing or capable of causing death

同义词：deathly, mortal

of an instrument of certain death

同义词：lethal

extremely poisonous or injurious; producing venom

involving loss of divine grace or spiritual death

同义词：mortal

exceedingly harmful

(of a disease) having a rapid course and violent effect

副词 deadly:

as if dead

同义词：lifelessly

as if produced by death

(used as intensives) extremely