ultimate

the finest or most superior quality of its kind; "the ultimate in luxury"

furthest or highest in degree or order; utmost or extreme; "the ultimate achievement"; "the ultimate question"; "man's ultimate destiny"; "the ultimate insult"; "one's ultimate goal in life"

being the last or concluding element of a series; "the ultimate sonata of that opus"; "a distinction between the verb and noun senses of `conflict' is that in the verb the stress is on the ultimate (or last) syllable"