sissification

Feminization or feminisation (see spelling differences), sometimes forced feminization (shortened to forcefem or forced femme), and also known as sissification, is a practice in dominance and submission or kink subcultures, involving reversal of gender roles and making a submissive male take on a feminine role, which includes cross-dressing. Subsets of the practice include "sissy training" and variations thereof, where the submissive male is "trained" to become feminine.
Feminization as a sexual fetish is not the same thing as being a transgender woman, and the submissive partners engaging in it are typically heterosexual men. It has been speculated that the fetish is rooted in societal pressure for men to be traditionally masculine.

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