Adjective
The word is derived from deadly
Delay is the deadliest form of denial. C. Northcote Parkinson
The deadliest foe to virtue would be complete self-knowledge. F. H. Bradley
We've been devastated by the severest and deadliest drought in history – that of our profound awareness of the futility of all effort and the vanity of all plans. Fernando Pessoa
The deadliest feeling that can be offered to a woman is pity. Vicki Baum
As the best wine doth make the sharpest vinegar, so the deepest love turns to the deadliest hate. John Lyly
As the best wine makes the sharpest vinegar, so the deepest love turns to the deadliest hatred. Spanish Proverb