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.
People should pause and realize for many men emasculation is: having someone decide what burger they are getting without consulting them, a spouse that earns more money, and having to look after their own children. We have some work to do.