wicked, mischief, seduce, rape, noisy
姧 centers on morally corrupt or harmful behavior, especially of a sexual or disruptive nature: wickedness, mischief, seduction, rape, and noisy disturbance. The meanings share a core of transgressive, often sexually charged wrongdoing.
姧 is a variant form of 姦, which combines three women to suggest scheming or wickedness. The replacement of one woman with 干 may be a simplification or phonetic cue, but the exact historical development is uncertain.
Two women 㚣 beside a shield or weapon 干: imagine a noisy, wicked scene where seduction leads to violence.
For カン, picture a can of mischief being opened by two scheming women: can -> カン, and the noise and wickedness spill out.