/ Dictionary / Index P painless: Meaning and Definition of Find definitions for: pain•less Pronunciation: (pān'lis), [key] without pain; causing little or no pain: painless dentistry; a painless cure. not difficult; requiring little or no hard work or exertion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: painless (Thesaurus) painkiller painstaking Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language