bitterly (adv.)
- abominably
- acidly
- agonizingly
- awfully
- baldly
- balefully
- bitingly
- blatantly
- brashly
- caustically
- confoundedly
- cruelly
- cuttingly
- damnably
- deadly
- deathly
- deucedly
- distressingly
- dreadfully
- excessively
- excruciatingly
- exorbitantly
- extravagantly
- flagrantly
- frightfully
- grievously
- hardly
- hellishly
- horribly
- improperly
- incisively
- inexcusably
- infernally
- inordinately
- intolerably
- keenly
- lamentably
- miserably
- mordaciously
- nakedly
- openly
- painfully
- penetratingly
- piercingly
- piteously
- sadly
- scathingly
- sharply
- shockingly
- sorely
- staggeringly
- tartly
- terribly
- torturously
- trenchantly
- unashamedly
- unbearably
- unduly
- unpardonably
- witheringly
- woefully
