夢中
むちゅう · muchuu · JLPT N3 · na-adj
crazy
夢中 = dream + middle: in the middle of a dream, lost to the world
夢 (mu) means dream and 中 (chuu) means middle or inside. Being 夢中 is being so caught up in something or someone that you seem to be inside a dream. It often appears as 〜に夢中, meaning crazy about or hooked on something.
中 — vertical stroke 丨 through enclosure 口
Pictograph of a banner or pole piercing the center of a target or territory, depicting the idea of 'middle' or 'center'. The horizontal frame represents boundaries, and the vertical line marks the central axis. The meaning extended from spatial center to 'middle, central, China' (中国, the Middle Kingdom).