Being last in a series, process, or progression: "As the ultimate arbiter of the Constitution, the Supreme Court occupies a central place in our scheme of government\u201d ( Richard A. Epstein). Fundamental; elemental: an ultimate truth. Of the greatest possible size or significance; maximum: Has the ultimate diamond been found? Representing or exhibiting the greatest possible development or sophistication: the ultimate bicycle. Utmost; extreme: the ultimate insult. Being most distant or remote; farthest. See Synonyms at last1. Eventual: hoped for ultimate victory. The basic or fundamental fact, element, or principle. The final point; the conclusion. The greatest extreme; the maximum: actions that represented the ultimate in political expediency.