Noah Webster
Deadly
DEAD'LY, adjective ded'ly.
1. That may occasion death; mortal; fatal; destructive; as a deadly blow or wound.
2. Mortal; implacable; aiming to kill or destroy; as a deadly enemy; deadly malice a deadly feud.
DEAD'LY, adverb ded'ly. In a manner resembling death; as deadly pale or wan.
2. Mortally.
With groanings of a deadly wounded man. Ezekiel 30:24.
3. Implacably; destructively.
4. In a vulgar or ludicrous sense, very; extremely; as a deadly cunning man.