/ Dictionary / Index U unaccountable: Meaning and Definition of Find definitions for: un•ac•count•a•ble Pronunciation: (un"u-koun'tu-bul), [key] — adj. impossible to account for; unexplained; inexplicable: The boat has an unaccountable tendency to yaw. exempt from being called to account; not answerable:subordinate, he is unaccountable for errors in policy. As a Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unaccountable (Thesaurus) unaccomplished unaccounted-for Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language