Badass/ˈbædæs/ Definition 1 of 3Pro Tip 1/3Positive Extreme Used to express high praise for someone's performance or attributes. His cooking skills are badass; everyone loves his food. Pro Tip 2/3Admiration Tone Conveys respect and admiration, often with a sense of coolness or awe. You scored the winning goal? That's so badass! Pro Tip 3/3Informal Praise Best reserved for casual conversations, not formal settings. I heard she's a badass programmer, solving issues in no time.