/ Dictionary / Index D down-the-line: Meaning and Definition of Find definitions for: down-the-line Pronunciation: (doun'u līn'), [key] — adj. complete, full, unreserved, or whole-hearted: a down-the-line endorsement. —adv. fully; completely; whole-heartedly: Will you support it down-the-line? Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. downtake downthrow Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language