what does sigma mean in a slang word in Gen Z culture which means a person who is independent, confident and chooses to walk their own path instead of fitting into social hierarchies. The meaning of sigma is frequently thought about in the context of this 'lone wolf' character. In internet chat it's used in memes, captions or comments to emphasize self-reliance, silent confidence or going one's own way. It can be comedic or serious depending on the context especially on TikTok, Instagram and YouTube.