sigma

What it means

A lone-wolf type who does his own thing without needing the group's approval, from a pseudoscientific ranking of men that circulated in manosphere forums. Kids picked it up mostly as parody, applying it to cats, cartoon characters, and anyone acting mildly aloof. The sincere version and the mocking version both exist, so context matters.

In the wild

"He ate lunch alone in the stairwell on purpose. Sigma."

The parent note

Nearly always a joke among kids, but its roots are in online communities with genuinely bleak ideas about men and women.

Tracked since August 26, 2026 across public sources. Meanings drift fast, so this entry is refreshed automatically as usage changes.