PAINFULLY
painfully, distressingly
(adverb) unpleasantly; “his ignorance was painfully obvious”
painfully, sorely
(adverb) in or as if in pain; “she moved painfully forward”; “sorely wounded”
Source: WordNet® 3.1
Etymology
Adverb
painfully (comparative more painfully, superlative most painfully)
In a painful manner; as if in pain.
(informal) Badly; poorly.
Usage notes
Some adjectives commonly collocating with painfully: thin, long, slow, boring, close
Source: Wiktionary
PAINFUL
Pain"ful, a.
1. Full of pain; causing uneasiness or distress, either physical or
mental; afflictive; disquieting; distressing Addison.
2. Requiring labor or toil; difficult; executed with laborious
effort; as a painful service; a painful march.
3. Painstaking; careful; industrious. [Obs.] Fuller.
A very painful person, and a great clerk. Jer. Taylor.
Nor must the painful husbandman be tired. Dryden.
Syn.
– Disquieting; troublesome; afflictive; distressing; grievous;
laborious; toilsome; difficult; arduous.
– Pain"ful*ly, adv.
– Pain"ful*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition