Call him irrepressible
Call him undeniable
Call him unremarkable too.
Call him unreliable
Call him indefensible
Call him unrepairable too.
Call him unprofessional
Call him inexpressible
Call him inexcusable too.
Call him quite unfashionable
Call him uninsurable
Call him undesirable too.
Call him unexceptional
Call him unsuppressable
Call him unconventional too.
Call him undecipherable
Call him unapproachable
Call him uneconomical too.

Heck, that's enough for now. I'll get back to this later.