Painful

a.	1.	Full of pain; causing uneasiness or distress, either physical or mental; afflictive; disquieting; distressing.
	2.	Requiring labor or toil; difficult; executed with laborious effort; as a painful service; a painful march.
	3.	Painstaking; careful; industrious. A very painful person, and a great clerk. - Jer. Taylor. Nor must the painful husbandman be tired. - Dryden.

Adj.	1.	painful - causing physical or psychological pain; "worked with painful slowness" Antonyms: painless - not causing physical or psychological pain; "painless dentistry"
	2.	painful - causing misery or pain or distress; "it was a sore trial to him"; "the painful process of growing up" Synonyms: afflictive, sore
	3.	painful - exceptionally bad or displeasing; "atrocious taste"; "abominable workmanship"; "an awful voice"; "dreadful manners"; "a painful performance"; "terrible handwriting"; "an unspeakable odor came sweeping into the room" Synonyms: awful, dreadful, terrible, unspeakable, abominable, atrocious
	4.	painful - causing physical discomfort; "bites of black flies are more than irritating; they can be very painful" Synonyms: irritating

Herculean, aching, achy, acute, affecting, afflictive, aggravating, algetic, annoying, arduous, assiduous, atrocious, backbreaking, besetting, biting, bleak, bothersome, burdensome, burning, careful, cheerless, comfortless, conscientious, cramping, cruel, crushing, demanding, deplorable, depressing, depressive, detailed, diligent, discomforting, dismal, dismaying, disquieting, distasteful, distressful, distressing, disturbing, dolorific, dolorogenic, dolorous, dreary, earnest, effortful, exacting, exasperating, excruciating, forced, gnawing, grave, griping, grueling, harassing, hard, hard-earned, hard-fought, harrowing, harsh, heavy, hefty, hurtful, irksome, irritating, joyless, killing, labored, laborious, lamentable, meticulous, mournful, moving, onerous, operose, oppressive, painstaking, paroxysmal, pathetic, piercing, piteous, pitiable, plaguey, pungent, punishing, racking, raw, regrettable, rigorous, rueful, sad, saddening, scrupulous, sedulous, sensitive, severe, sharp, shooting, smarting, sore, sorrowful, spasmatic, spasmic, spasmodic, stabbing, stinging, strained, strenuous, tender, thorough, thoroughgoing, throbbing, toilsome, tormenting, torturous, touching, tough, troublesome, troubling, trying, unappetizing, uncomfortable, unpalatable, unpleasant, unsavory, uphill, vexatious, vexing, wearisome, woebegone, woeful, worrisome, worrying, wretched