1.causing or capable of causing death;
a fatal accident
2.of an instrument of certain death;
deadly poisons
3.extremely poisonous or injurious; producing venom;
venomous snakes
4.involving loss of divine grace or spiritual death;
the seven deadly sins
5.exceedingly harmful
6.(of a disease) having a rapid course and violent effect
7.as if dead
8.as if produced by death;
deadly pale
9.(used as intensives) extremely;
she was madly in love