lethal applies to something that is bound to cause death or exists for the destruction of life. Some common synonyms of lethal are deadly, fatal, and mortal. While all these words mean causing or capable of causing death, lethal applies to something that is bound to cause death or exists for the destruction of life. Experience nature, scanning any creature you find to add them to your bestiary. Explore the wondrous outdoors and rummage through their derelict, steel and concrete underbellies. Lethal refers to anything dangerous enough to cause death. The cobra's venom is so lethal that if you get bitten and can't find the antidote, it's lights out forever. Poisonous spiders, guns, knives, and radiation — all of these things can be lethal because they have the ability to kill. 1. of or causing death; deadly; fatal: a lethal weapon; a lethal dose. 2. made to cause death: a lethal injection. 3. causing great harm; disastrous: The disclosures were lethal to his candidacy. Byrna Less-Lethal pistols are non lethal self defense weapons powered by compressed air (CO2) and fire chemical and / or kinetic rounds capable of incapacitating a threatening suspect from up to 60ft feet away for up to 45 minutes. LETHAL.GG is a leading enthusiast-focused retailer for high performance gaming mice, mousepads, keyboards, and accessories, serving players worldwide from its base in Alpharetta, GA since 2019. LETHAL definition: of, relating to, or causing death; deadly; fatal: a lethal dose. See examples of lethal used in a sentence. / ˈli·θəl / able to cause or causing death; extremely dangerous: a lethal weapon (Definition of lethal from the Cambridge Academic Content Dictionary © Cambridge University Press).