raise high, unrestrained
倜 centers on a person who stands out from normal constraints: raising themselves high or acting in an unrestrained, free manner.
倜 combines 亻 (person) with 周, which likely contributes the sound and may relate to the idea of being outstanding or apart from the ordinary. The exact historical development is uncertain.
A person 亻 beside 周 (which can suggest a cycle or enclosure) breaks free from the circle, rising high and acting without restraint.
For テキ, imagine a person raising a tech gadget high above their head, unrestrained: tech -> テキ.
being exceedingly wiser than the common man