/ Dictionary / Index L lamentable: Meaning and Definition of Find definitions for: la•men•ta•ble Pronunciation: (lu-men'tu-bul, lam'un-tu-), [key] — adj. that is to be lamented; regrettable; unfortunate: a lamentable decision. mournful. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lamentable (Thesaurus) lament lamentation Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language