American English

Definition of ultimate adjective from the Oxford Advanced American Dictionary



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  1. 1happening at the end of a long process synonym final our ultimate goal/aim/objective/target We will accept ultimate responsibility for whatever happens. The ultimate decision lies with the parents.
  2. 2most extreme; best, worst, greatest, most important, etc. This race will be the ultimate test of your skill. Silk sheets are the ultimate luxury. Nuclear weapons are the ultimate deterrent.
  3. 3from which something originally comes synonym BASIC synonym fundamental the ultimate truths of philosophy and science We could not trace the ultimate source of the rumors.
See the Oxford Advanced Learner's Dictionary entry: ultimate