The kanji 反 primarily conveys the idea of "opposite," "against," "reverse," or "to turn over/flip." It suggests a movement or action in a direction that is counter to the original or expected. It can also imply something that is the inverse or a mirror image of something else.

・On-yomi (音読み): * ハン (han) ・Kun-yomi (訓読み): * そ（る） (soru) - to curve, to bend * そ（る） (soru) - to warp, to twist * かえ（る） (kaeru) - to return, to go back, to be against

⚫︎反対 Translation: Opposition; objection; resistance. ⚫︎反省 Translation: Reflection; reconsideration; introspection; repentance. ⚫︎反時計回り Translation: Counterclockwise.

The kanji 反 is a pictograph. It depicts a hand 手 and something that is flipped over or turned. The character originally showed the action of "turning over" or "reversing" something, which then evolved to encompass the meanings of "opposite" and "against." The original form likely shows a hand 手 holding an object and flipping it over.