nonlethal adjective non·le·thal \ ˌnän-ˈlē-thəl \ Trending Now: More Trending: lowlife kakistocracy slimeball salacious oligarch SEE ALL See What's Trending Now See More Trending Words What's Trending Now More Trending Words lowlife 'a person of low moral character' kakistocracy 'government by the worst people' slimeball 'a morally repulsive or odious person' salacious 'arousing or appealing to sexual desire' oligarch 'government in which a small group exercises control' SEE ALL Time Traveler! Explore the year a word first appeared Definition of nonlethal : not lethal : not capable of causing death a nonlethal gas nonlethal weapons a nonlethal dose of venom First Known Use of nonlethal 1625 See Words from the same year NEW! Time Traveler Seen and Heard What made you want to look up nonlethal? Please tell us where you read or heard it (including the quote, if possible). show hide