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adj. dead·li·er, dead·li·est
1. Causing or tending to cause death: deadly weapons; a deadly spill of radioactive waste products. See Synonyms at fatal.
2. Suggestive of death: a deadly pallor.
3. Aiming or wanting to kill; implacable: deadly enemies.
a. Destructive in effect: gave the film a deadly review.
b. Tending to take away vitality, effectiveness, or force: the deadly habit of procrastination.
5. Absolute; utter: deadly concentration.
6. Extreme or terrible: worked under deadly strain.
7. Extremely accurate; unerring: She is a deadly shot with the bow.
8. Dull, tedious, and boring: a deadly prose style.
1. So as to suggest death.
2. To an extreme: deadly serious.
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|Noun||1.||deadliness - the quality of being deadly|
fatality - the quality of being able to cause death or fatal disasters