wise, to know intuitively
悊 centers on deep, intuitive wisdom: knowing something clearly without needing step-by-step reasoning, and the respect that such insight commands.
悊 combines 折 (break, fold) with 心 (heart/mind), suggesting a mind that can break through complexity to reach intuitive understanding. The exact historical development is uncertain.
折 (break) over 心 (heart): imagine breaking through mental barriers with your heart to gain direct, intuitive wisdom.
For テツ, picture a wise philosopher named Tetsu who intuitively knows the answer: Tetsu -> テツ.