Synonyms for Painfully:

adv.

•all (adverb)
sorely.
•painfully (adverb)
agonizingly, witheringly, bitingly, unbearably, Insufferably, bitterly, uncomfortably, distressingly, distressfully, severely, cruelly, gnawingly, tryingly, gruelingly, sorely, odiously, arduously, acutely, annoyingly, aggravatingly, troublesomely, miserably, smartingly, stingingly, woefully, achingly, offensively, irritatingly, tormentingly, torturously, irksomely, unpleasantly, hurtfully, oppressively, horrendously, excruciatingly, grievously, disagreeably, piercingly.
•with extreme care (adverb)
carefully, slowly.
•with pain (adverb)
sorely, achingly.

adv

•badly (adverb)
sorely.
•hard (adverb)
distressingly, agonizingly, gruelingly.
•painfully (adverb)
agonizingly, witheringly, bitingly, unbearably, Insufferably, bitterly, uncomfortably, distressingly, distressfully, severely, cruelly, gnawingly, tryingly, gruelingly, sorely, odiously, arduously, acutely, annoyingly, aggravatingly, troublesomely, miserably, smartingly, stingingly, woefully, achingly, offensively, irritatingly, tormentingly, torturously, irksomely, unpleasantly, hurtfully, oppressively, horrendously, excruciatingly, grievously, disagreeably, piercingly.

n.

agonizing, crippling, agonising, achy, bad, burning, chronic, chapped, acute, angry. hopelessly, carefully, downright, unspeakable, utter, utterly, slowly, thorough, such as it is, sorry, excruciating.

Other synonyms:

•Other relevant words:
excruciating.

Usage examples for painfully

1. He gasped painfully as he spoke, but smiled sadly directly after as the Resident warmly grasped his hand. – One Maid's Mischief by George Manville Fenn

2. Painfully but steadily she climbed down and down. – The Everlasting Whisper by Jackson Gregory

3. We shall come up, declared Miller; slowly and painfully perhaps, but we shall win our way. – The Marrow of Tradition by Charles W. Chesnutt