Mersculinity 

(Noun) equivalent of masculinity for a merman. The adjective form is mersculin, referring to the masculine nature of a merman.

Every mermaid who entered King Triton's court was awed by his mersculinity.

"You're so mersculin and sexy," cooed the mermaid to her boyfriend.

Mersculinity by Dragonfruit66 January 9, 2012

Fragile Masculinity 

This is a term used to describe a man who has a fragile sense of masculinity for whatever reason. It can be used for someone who tries too hard to fit the male stereotypes in fear of looking too feminine in front of society.

Jim: I wouldn't dare wear tight jeans, im scared that someone might think im gay.

Jordan: Dude, stop having such fragile masculinity and get over it. It doesnt matter how tight your jeans are, all that matters is how comfortable you are in them. Stop giving a shit about how 'manly' people think you are. Define 'manliness' through what you do, not through society's mindset.

Fragile Masculinity by I cantbebothered June 16, 2018

Flamboyant Masculinity 

A cultural movement in which men use over-the-top fashion to express themselves. Through makeup, jewelry, and boob-windows, they enhance their masculinity.

Did you know that "Jojo's Bizarre Adventure" is Japanese for "Flamboyant Masculinity"?

Flamboyant Masculinity by SheerNonsense February 15, 2021

female masculinity 

The performance of stereotypical/marginal male traits and behaviors, in physical appearance and/or personality, which goes against the societal norm of embodying mainstream femininity for those who identify or present as female.

The girls in my gender studies class did a great job at explaining female masculinity!

female masculinity by G302 July 5, 2016

masculinity 

The properties characteristic of the male sex

The trait of behaving in ways considered typical for men

His masculinity is very obvious in the way he struts his stuff.

masculinity by DjDave71 March 4, 2008

masculinity 

the epitome of what a man should be

the opposite of femininity

girl 1: ‘have you seen that guy called Loris?’
girl 2: “yeah i heard he likes pigeons”
girl 1: ‘wow he is the definition of masculinity’

masculinity by ally2164 December 18, 2020

Musculinity

Ones muscle mass.

Jed's tight shirt revealed his musculinity to all of the young dames that surrounded him.

Musculinity by bigluggage September 9, 2010