I'm not sure what the legal definition of sexual assault is. But, for practical purposes, if an assault occurred, and the underlying motivation for that assault was sexual in nature, then I'd consider it fair to discuss that as sexual assault. Public opinion is not the same as a court of law, and frankly I'm getting tired of people attempting to transfer legal rights and definitions into workplace and/or public opinion situations. (This is a bit of a side tangent, I'm not accusing you of doing this. ) Freedom of speech, right to due process, burden of proof, etc. Those are rights meant to protect us from government persecution. They rarely extend beyond that.