Outcome

Antonyms of outcome:
consideration, determinant, factor, base, basis, foundation, ground, groundwork, impetus, incentive, inspiration, instigation, stimulus, mother, origin, root, source, spring, antecedent, causation, cause, occasion, reason.
Examples of usage:
  1. The very outcome of the war itself depended upon wheat.
    "The Desert of Wheat", Zane Grey.
  2. No matter what the outcome of this is, Levi Markham, I reckon you'll live to thank me for putting you on the right track."
    "A Son of the Hills", Harriet T. Comstock.
  3. He was a victim to a war that was the outcome solely of Napoleon's Continental System, and not of the needs of France.
    "The Life of Napoleon I (Volumes, 1 and 2)", John Holland Rose.