dishonor, disobey, insult
慁 centers on a state of disgrace or defiance: bringing dishonor, disobeying, or insulting someone. The meanings share the idea of acting in a way that lowers respect or causes offense.
慁 combines 心 (heart/mind) with 圂, which likely contributes the sound and may relate to a pigsty or enclosure, suggesting a confined or degraded state of mind. The exact historical development is uncertain.
The top part 圂 looks like a pig in a pen (豕 inside 口), and the bottom is 心 (heart). Imagine a heart trapped like a pig in a sty, leading to disgrace and insult.
For コン, picture a con artist bringing dishonor by insulting everyone: con -> コン, and the heart 心 feels the disgrace.