Opprobious. Outrageously disgraceful or shameful; intended to bring disgrace.
From late 14th century, the Old French opprobrieux, from Late Latin opprobriosus, from Latin opprobare “to reproach, taunt,” from ob “against” + probrum “reproach, infamy.”
Etymological sense is “disgrace attached to conduct considered shameful.”
Sounds like a party.