First off, be careful. Make sure you aren’t putting yourself in danger. Don’t talk to them. Talk to someone who can do something to protect you. HR if it’s a work thing or the police if it rises to that level. If in doubt, err on the side of caution. If something like HR or police aren’t an option, ghost them.

I hesitate to even go on. So let me reiterate. Aggressiveness is the kind of red flag you don’t want to take lightly.

All that said, if none of the above helps; if you’re talking about something other than fear for your personal safety (and again, please don’t let denial blind you here), then: don’t talk about their behavior. Talk about how you feel. Say that you feel nervous/on edge/scared when they behave in whatever way you’re alluding to.