Sigma Girl 

Often seen with her hair in a wolfcut, sometimes dyed an outrageous color, her eyes green or blue. She wears the best tops and swimsuits. She is always on TikTok. She has a skinny but healthy body. All the guys go crazy for her.

Tyler: Holy crap is that Layla in a bikini, her abs are so hot
Nial: Yeah bro she’s been working out

Tyler: Woah what a sigma girl

Sigma Girl by that one e-boy April 19, 2023

Sigma male 

The type of guy you should not mess with, you never know when he will let the beast out. Has an army of big titty women on his pillows, they shouldnt be touched or you will die of acidic burns. He is the type of guy to duck under bullets like the matrix. Always has a fedora on hand and has all the anime powers.

Bully: Hey nerd!
Sigma male: What did you call me. *death stare*
Bully: D-d-dont hit me please. *whimping and shivering*
Sigma male: Thats what i thought. Now scarm!
Sexy hot waifu: Heyy sigma-kun, give me your dick.
Sigma male: With pleasure waifu-chan. *tips fedora*

Sigma male by Fridge_UD April 27, 2023

Sigma male 

A complete and utter psychopath 12 year-olds look up to so they can seem cool, edgy and 'badass' because it is their way of getting over being rejected.

This person is such a Sigma male. I wanna learn how to have zero knowledge of women just like him!

Sigma male by Ultra_Boi1304 May 26, 2023

Sigma male 

Normally a "sigma male" refers to someone (most likely under the male race if not obvious) is a male entity who is a "loner" or prefers being alone denying help or company from others, sigma males usually find jokes like "skibidi toilet" and "only in ohio" funny for whatsoever reason, despite the stereotypes sigma males can also refer to singal dads etc and not necessarily always means a little kid with the humor of a boot

"MY brother is a sigma male because he doesn't feel he needs the help from others and likes being alone"

Sigma male by Impseudonym August 2, 2023

sigma-algebro 

Sigma-algebro or σ-algebro is a bro who studies probability and measure theory, as σ-algebra is one of the first things they learn in the field.

Case 1
Bro A: Josh is pulling all the girls, no wonder because he's smart and handsome and works as a quant
Bro B: Yeah Josh is a σ-algebro

Case 2
Sam had nightmares about σ-algebra during his PhD, and dropped out of school, he's failed to be a sigma-algebro

sigma-algebro by dapula_burger August 14, 2023

sigma’d 

when you sigma something

i sigma’d my eyelashes in my eye (by doing sigma face)
i sigma’d you (by doing sigma face at you)

sigma’d by CultOfCats August 22, 2023

sigma’d 

when you use sigmaface and sigma (at) something/someone

i sigma’d so hard i blinked my eyelashes in my eye ( made sigma face and then there were consequences as i was too powerful )
i sigma’d at you (made sigma face at you)

sigma’d by CultOfCats August 22, 2023