• 未来みらい — future
• 未定みてい — undecided / pending
• 未満みまん — less than / under
• 未経験みけいけん — no experience
• 未確認みかくにん — unconfirmed
• 未成年みせいねん — minor (underage)

未み shows a tree 木 that hasn’t fully grown—its top line is shorter than the bottom. Compare with 末まつ, where the top line sticks out further; that one means “end.” So 未 naturally carries the sense of “not yet / still to come.”

In the zodiac, 未 is the eighth sign (Sheep/Ram/Goat).

この計画けいかくは未定みていです。
This plan is undecided.

その問題もんだいは未解決みかいけつのままです。
The issue remains unresolved.