/ Dictionary / Index P painstaking: Meaning and Definition of Find definitions for: pains•tak•ing Pronunciation: (pānz'tā"king, pān'stā"-), [key] —n. careful and diligent effort. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: painstaking (Thesaurus) painless paint Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language