Geek/ɡiːk/ Definition 1 of 3Pro Tip 1/3Positive Connotation Implies admiration for deep knowledge or passion in a subject. Everyone admires Lisa for being a computer geek. Pro Tip 2/3Pop Culture Often associated with fans of video games, comics, or technology. He’s a true geek with all the latest video game releases. Pro Tip 3/3Specialized Knowledge Indicates expertise in a niche, not general knowledge. She's the office's grammar geek, always editing our work.