sigma boy is not in our dictionary (yet). Here's what it could mean:

Results generated using artificial intelligence.

noun

A young man or boy who identifies with or is characterized by the traits of a 'sigma male,' such as independence, self-reliance, and a tendency to operate outside of conventional social structures.

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My little brother watches so many TikTok edits that he's starting to think of himself as a real-life sigma boy.

From AI

The character in the show was portrayed as a quiet, lone-wolf type, the very picture of a sigma boy.

From AI