I think it ahould also mention gradual opening of sexual morals over an extended period of time, vs short and quick like mind break. Also generally with less explicit direct force.
FrozenPineapple, I think corruption is generally more about an outside force changing someone into a worse version of themselves, be it through magic, drugs, pleasure, etc. Moral degeneration is more like an inward failing of a character's own principles which can be influenced by an outside force, but also not. Like the difference between a woman becoming a sex slave because the pleasure forced her into wanting it, and a woman who became one out of circumstance and then began to want it herself.
Agreed with Abu Jahl; The description needs to change to, "A situation where a usually innocent character gradually loses their inhibitions and moral values."
I feel like the most concise explanation is "A situation where usually an innocent character gradually loses their sexual inhibitions and moral values."