/ Dictionary / Index A authentical: Meaning and Definition of Find definitions for: au•then•ti•cal Pronunciation: (ô-then'ti-kul), [key] — adj. Archaic. authentic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. authentic authenticate Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language