types:

sex crime, sex offense, sexual abuse, sexual assault

a statutory offense that provides that it is a crime to knowingly cause another person to engage in an unwanted sexual act by force or threat

bigamy

the offense of marrying someone while you have a living spouse from whom no valid divorce has occurred

molestation

the act of subjecting someone to unwanted or improper sexual advances or activity (especially women or children)

type of:

crime, criminal offence, criminal offense, law-breaking, offence, offense

(criminal law) an act punishable by law; usually considered an evil act