Gender identity An individual’s inner feelings and outer expressions of their gender. Related Articles: Monogamy is NOT The Only Way: An In-Depth Exploration With Dr. Jessica O’ReillyExploring the World Outside of Monogamy.Glossary: Comprehensive sex educationGlossary: GRS (genital reconstruction surgery)Glossary: OutingGlossary: Transsexual Gender fluidity Gender identity disorder (GID)