Read the dictionary definition of deadly. All definitions for this word.
1. (of a disease) having a rapid course and violent effect
2. causing or capable of causing death
1. a fatal accident
2. a deadly enemy
3. mortal combat
4. a mortal illness
3. of an instrument of certain death
1. deadly poisons
2. lethal weapon
3. a lethal injection
4. exceedingly harmful
5. involving loss of divine grace or spiritual death
1. the seven deadly sins
6. extremely poisonous or injurious; producing venom
1. venomous snakes
2. a virulent insect bite
7. (used as intensives) extremely
1. she was madly in love
2. deadly dull
3. deadly earnest
4. deucedly clever
5. insanely jealous
8. as if dead
