expression, noun
Refers to the freedom to express one's sexuality or engage in sexual activity without societal or legal restrictions. Often used in discussions of sexual liberation, rights, and social movements.
性の自由は基本的人権の一つだと考えられている。
Sexual freedom is considered one of the fundamental human rights.
彼女は性の自由を求めて活動している。
She is campaigning for sexual freedom.
Compound of 性 (sei, 'sex, gender') + の (no, possessive particle) + 自由 (jiyū, 'freedom'). A straightforward modern phrase.