not becoming; unsuitable or inappropriate; not decent.
my behavior was unbecoming after I smoked that PCP-laced chronic blunt
A polite word used by members of the british royal family to describe a sex offender (rapist) that traficked teenaged sex slaves.
Prince Andrew: jeffery epstien has obviously conducted himself in a manner unbecoming.
Reporter: Unbecoming?! He was a sex offender!