The Oxford Thesaurus An A-Z Dictionary of Synonyms - ultimateadj.

1) final, last, terminating, terminal, end, eventual, conclusive, concluding, decisive, deciding: The ultimate outcome will not be known till next week. Who is the ultimate authority in such matters? 2 final, maximum, highest, greatest, supreme, utmost, paramount: Her ultimate goal is to win the gold medal. 3) elemental, basic, fundamental, underlying, primary, essential, final: He believes that the ultimate truths were set down in Scripture. 4) remotest, furthest, farthest, extreme, uttermost, last, final: The ultimate stage of the experiment will be at a distance of five light-years.