Antonyms of adj unpainful

1 sense of unpainful

Sense 1
pain-free, unpainful -- (not accompanied by pain sensations; "pain-free surgery")

INDIRECT (VIA painless) -> painful -- (causing physical or psychological pain; "worked with painful slowness")

Similarity of adj unpainful

1 sense of unpainful

Sense 1
pain-free, unpainful -- (not accompanied by pain sensations; "pain-free surgery")
       => painless (vs. painful) -- (not causing physical or psychological pain; "painless dentistry")