abominable
abom·i·na·ble
/əˈbɑːmənəbəl/ adj [more ~; most ~]
formal : very bad or unpleasant
It was an abominable crime.
We had abominable [=terrible] weather all week.
His behavior was abominable.
abom·i·na·bly /əˈbɑːmənəbli/ adv
He behaved abominably.