Lethal (adjective) — مُميت: Able to cause death. Below are 8 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
fatal; lethal; mortal; destructive; dangerous; poisonous; life-threatening; extremely harmful
Causing death; also leading to disaster.
Subject to death; also causing death, or (of enemies) bitter and lifelong.
Poisonous; harmful.
causing great and irreparable damage; tending to destroy or capable of destroying
A station at the end of a line; a computer input device; final.
murderouskilling