classic

[1]	paragon , epitome , outstanding example , exemplar , model , paradigm , prototype
[2]	masterpiece , master-work

adj.

[1]	standard , leading , outstanding , prototypical , definitive , model , ideal , archetypal , paradigmatic
[2]	legendary , immortal , enduring , deathless , ageless , timeless , undying , venerable , time-honoured , outstanding , first-rate , superior , excellent , noteworthy , notable , exemplary
[3]	authoritative , classical , definitive
[4]	classical
[5]	classical , Greco-Roman , Graeco-Roman , Hellenic