Denial-gender, or genderfear is a umbrella term for various genders associated with doubt and anxiety. Examples would be denialgirl, denialboy, denial-nonbinary, denial-bigender, denial-agender, denial-xenogender, and the list goes on.
Denial-gender is whereas someone is scared or afraid of identifying as a certain gender, whether it be dysphoria, judgement from others, insecurity, or anything else that's keeping them from being that gender that they truly feel like. This gender is suppose to make those who feel scared of being themself somewhat comfortable in their identity. A simple explaination would be someone who truely feels like a transgender woman, but they cannot express that due to the extremely judgemental environment they live in, and the fact that they, themself, have internalized transphobia. So the term that would best describe them would be "Denial-girl." You can interpret other ideas of what this gender means to YOU.
Denial-gender heavily relates to Xumgender, Perigender, Paradoxigender, and even Expecgender depending on the person.
This gender is made specifically for people with anxiety disorders, not necessarily neurodivergent people as a whole, but anyone no matter their mental stability can use this term.