humiliate, treat with contempt
僇 centers on treating someone with contempt or humiliating them, often through public disgrace or scorn.
僇 combines 亻 (person) with 翏, which likely contributes the sound and may relate to the idea of binding or disgrace. The exact historical development is uncertain.
A person 亻 beside 翏, a shape that looks like feathers being plucked or stripped away. Imagine someone being publicly stripped of their dignity, humiliated and treated with contempt.
For リク, picture a person being humiliated by being forced to lick the floor: lick -> リク, and the shame is tied to the person radical.