Sharpgender or gendersharp refers to someone who fiercely/sharply identifies with a specific identity, such as male, despite not 100% identifying as that gender. sub-labels for it would be sharpboy, sharpgirl, enbysharp, or sharpflux.
History
Sharpgender was coined on June 7, 2020 by Tumblr user Mogaiflowerchild[1]