Bitterly
From BiblePortal Wikipedia
King James Dictionary [1]
Bit'Terly, adv. With a bitter taste.
1. In a severe manner in a manner expressing poignant grief as, to weep bitterly. 2. In a manner severely reproachful sharply severely angrily as, to censure bitterly.
Webster's Dictionary [2]
(adv.) In a bitter manner.