adj

• (not comparable) Final; last in a series.
  "[…] they [the sounds of an echo] next strike the ultimate secondary object, then the penultimate and antepenultimate; […]"
• (not comparable, of a syllable) Last in a word or other utterance.
• (not comparable) That will happen at some time; eventual.
• (not comparable) Last in a train of progression or consequences; tended toward by all that precedes; arrived at, as the last result; final.
  "those ultimate truths and those universal laws of thought which we cannot rationally contradict"

noun

• (uncountable, sports) Ellipsis of ultimate frisbee or ultimate disc.

verb

• (transitive, archaic) To finish; to complete.
  "These measures have been carried forward with a zeal and unanimity that warrant the hope we entertain, of ultimating the plans in respect to our Temple, before the next meeting of the Maryland Association."