Rare term for rape or sexual assault, likely found in older or legal contexts. Modern Japanese typically uses 強姦 (ごうかん) or 性的暴行.
In old documents, the word 強淫 is used to refer to sexual violence.
Compound of 強 (ごう, 'strong, forceful') and 淫 (いん, 'lewd, obscene'). The exact historical derivation is uncertain; it is a rare Sino-Japanese word.