Use 'tangential' when mentioning details that connect to the topic in an indirect way. His speech was full of tangential stories that were only loosely connected to the main point.
Pro Tip 2/3
Avoid in Focus
'Tangential' should be avoided when a clear, direct point is required. In debates, tangential remarks can weaken your position by diverting attention.
Pro Tip 3/3
Conversation Steer
'Tangential' can indicate someone is steering a conversation away from the main topic. I noticed her tangential comments were a tactic to avoid discussing the issue at hand.