oblivious is the direct opposite
Imperceptive: adj. lacking in perception or insight.Jane's answer to the question, "What evidence is there for God?" was very imperceptive.
indirect, usually, depending on the context.
I think there are several words that are the antonyms of "meeting." Here are some examples that come to mind:"parting""disbanding""diverging" or "divergence""dispersing" or "dispersal""separating" or...
Introvert.