WordNet sense 1 (a tense of verbs used in describing action that has been completed (sometimes regarded as perfective aspect)):

perfective, perfective tense, perfect tense

WordNet sense 2 (conforming to an ultimate standard of perfection or excellence; embodying an ideal):

ideal

WordNet sense 3 (without a flaw):

flawless

WordNet sense 4 (without fault or error):

faultless, immaculate, impeccable

WordNet sense 5 (perfect and complete in every respect; having all necessary qualities):

complete, consummate, consummate

WordNet sense 6 (without qualification; used informally as (often pejorative) intensifiers):

arrant, everlasting, gross, pure, stark, thoroughgoing, unadulterated, utter, double-dyed, sodding, staring

WordNet sense 7 (not diminished or moderated in intensity or severity; sometimes used as an intensifier):

unmitigated

WordNet sense 8 (marked by strict and particular and complete accordance with fact):

exact

WordNet sense 9 (make perfect or complete):

hone