Antonyms of adj painful

4 senses of painful

Sense 1
painful (vs. painless) -- (causing physical or psychological pain; "worked with painful slowness")

painless (vs. painful) -- (not causing physical or psychological pain; "painless dentistry")
        => pain-free, unpainful -- (not accompanied by pain sensations; "pain-free surgery")

Sense 2
afflictive, painful, sore -- (causing misery or pain or distress; "it was a sore trial to him"; "the painful process of growing up")

INDIRECT (VIA unpleasant) -> pleasant -- (affording pleasure; being in harmony with your taste or likings; "we had a pleasant evening together"; "a pleasant scene"; "pleasant sensations")

Sense 3
atrocious, abominable, awful, dreadful, painful, terrible, unspeakable -- (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")

INDIRECT (VIA bad) -> good -- (having desirable or positive qualities especially those suitable for a thing specified; "good news from the hospital"; "a good report card"; "when she was good she was very very good"; "a good knife is one good for cutting"; "this stump will make a good picnic table"; "a good check"; "a good joke"; "a good exterior paint"; "a good secretary"; "a good dress for the office")

Sense 4
irritating, painful -- (causing physical discomfort; "bites of black flies are more than irritating; they can be very painful")

INDIRECT (VIA uncomfortable) -> comfortable, comfy -- (providing or experiencing physical well-being or relief (`comfy' is informal); "comfortable clothes"; "comfortable suburban houses"; "made himself comfortable in an armchair"; "the antihistamine made her feel more comfortable"; "are you comfortable?"; "feeling comfy now?")

Similarity of adj painful

4 senses of painful

Sense 1
painful (vs. painless) -- (causing physical or psychological pain; "worked with painful slowness")
       => aching, achy -- (causing a dull and steady pain; "my aching head"; "her old achy joints")
       => agonized, agonised -- (expressing pain or agony; "agonized screams")
       => agonizing, agonising, excruciating, harrowing, torturing, torturous, torturesome -- (extremely painful)
       => biting, bitter -- (causing a sharply painful or stinging sensation; used especially of cold; "bitter cold"; "a biting wind")
       => chafed, galled -- (painful from having the skin abraded)
       => poignant -- (keenly distressing to the mind or feelings; "poignant anxiety")
       => itchy -- (causing an irritating cutaneous sensation; being affect with an itch; "he had an itchy toe from the mosquito bite")
       => racking, wrenching -- (causing great physical or mental suffering; "a wrenching pain")
       => saddle-sore -- ((of a rider) sore after riding a horse)
       => sensitive, sore, raw, tender -- (hurting; "the tender spot on his jaw")
       => traumatic -- (psychologically painful;"few experiences are more traumatic than losing a child";)
          Also See-> harmful#1; inhumane#1

Sense 2
afflictive, painful, sore -- (causing misery or pain or distress; "it was a sore trial to him"; "the painful process of growing up")
       => unpleasant (vs. pleasant) -- (disagreeable to the senses, to the mind, or feelings ; "an unpleasant personality"; "unpleasant repercussions"; "unpleasant odors")

Sense 3
atrocious, abominable, awful, dreadful, painful, terrible, unspeakable -- (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")
       => bad (vs. good) -- (having undesirable or negative qualities; "a bad report card"; "his sloppy appearance made a bad impression"; "a bad little boy"; "clothes in bad shape"; "a bad cut"; "bad luck"; "the news was very bad"; "the reviews were bad"; "the pay is bad"; "it was a bad light for reading"; "the movie was a bad choice")

Sense 4
irritating, painful -- (causing physical discomfort; "bites of black flies are more than irritating; they can be very painful")
       => uncomfortable (vs. comfortable) -- (providing or experiencing physical discomfort; "an uncomfortable chair"; "an uncomfortable day in the hot sun")