The kanji character 未 generally conveys the meaning of "not yet," "un-," or "future." It implies something that hasn't happened or been completed, or a state of being undeveloped or immature. It can also refer to the future in a general sense.

・On-yomi (音読み): ミ (mi) ・Kun-yomi (訓読み): まだ (mada)

⚫︎ 未完成 Translation: unfinished; incomplete ⚫︎ 未来 Translation: future ⚫︎ 未定 Translation: undecided; not yet decided

The kanji 未 is believed to be a pictograph representing the branch of a tree with many shoots. This visually suggested the idea of something that hasn't fully developed or reached maturity, therefore "not yet" or "future".