Don't apologize - We're here to help you learn. None of us must answer any question, so if we're here, we have chosen to be here, and so you are not wasting our time.
Unfortunately, I don't know what that dictionary might have met. You discuss "with" the other people in the conversation.
Discuss with your fellow team members what the next step is.
You need to discuss with your parents what courses you should take next year.
I discussed this with my boss, and I will be able to support you in this project.