- causing or tending to cause death; fatal; lethal: a deadly poison.
- aiming to kill or destroy; implacable: a deadly enemy.
- like death: a deadly pallor.
- excruciatingly boring: The dinner party was absolutely deadly.
- excessive; inordinate: deadly haste.
- extremely accurate: Annie Oakley was a deadly shot.
- in a manner resembling or suggesting death: deadly pale.
- excessively; completely: deadly dull.
Origin of deadly
Synonyms for deadlySee more synonyms for on Thesaurus.com
Examples from the Web for deadliness
Contemporary Examples of deadliness
We are not talking about an end to spree killing, only about a (perhaps) very slight reduction in its deadliness.There's Little We Can Do to Prevent Another Massacre
December 17, 2012
Historical Examples of deadliness
There was the deadliness of the story: its lack of malice, even of resentment.Alice Adams
Silently and with deadliness apparent in every move they approached him.In the Orbit of Saturn
Roman Frederick Starzl
Slander nips it like a frost; in deadliness it is second only to ridicule.Mistress Wilding
But the knowledge of his deadliness kept him from being made a target.When the West Was Young
Frederick R. Bechdolt
As to Navel-ill, much has been written on the deadliness of the complaint.Cattle and Cattle-breeders
- likely to cause deathdeadly poison; deadly combat
- informal extremely boring
- like death in appearance or certaintydeadly pale; a deadly sleep