I work in a large multinational company. My colleague uses a particular word for a greeting that is very offensive. It is not appropriate language at work and is against company policy.
My colleague used this racist language once with me before and I told them to stop. The offensive word was used while we were joking so they may not know I was serious.
I want to have a conversation with them about their choice of language. I've had conversations like this with close friends, but I'm not really sure what to say to a colleague. Any advice on how I can get them to understand this is a serious issue?
Note: we work in the same team, I do not report to them or have to work closely with them. They are generally an easy person to share an office with. I expect they will listen and be reasonable. I think it will be most effective if I have a conversation with them than escalate immediately to HR/management etc.