The only term I could think of is defeminization.
It seems like most people understand what emasculation is and the things that cause it.
What are some examples of situations that can cause the feeling?
Edit: changed effeminization to defeminization.
The fact that there’s not an easily defined name for it should tell you something.
The long and short of it is that emasculation is what happens when people think someone isn’t acting enough like “a man,” or is stopping someone from doing so.
In women, it’s generally acting too much like a man. Getting called “shrill” or “aggressive” is something that frequently brought against women who take an assertive role. I’ve also seen women who were in senior positions asked to take notes during a meeting, as if they were a personal assistant rather than a manager.
Emasculation is treating a man as less than a man. As if he were a woman. The equivalent for a woman is treating her like society has traditionally treated a woman. Our current best word for that is probably “misogyny,” but we can unfortunately also go with “normal.”