obsolescent
superannuate
obsolete
obsolesce
go out with the ark
obsolescence
Betamax
primitive
moribund
outmoded
neolithic
prehistoric
dated
unmodernized
life-expired
out of the ark
antiquate
outdatedness
old
didine
antiquation
go by the wayside
on its way out
outdate
extinct
failed
obsoleter
obsoletor
obsoleteness
superannuated
paleologism
démodé
outdatedly
undermodernized
Jurassic
decay
outdated
dinosaurish
paleolithic
Flintstonian
retired
behind the times
erasively
rustiness
decarnate
demoded
go the way of the dodo
go the way of the dinosaurs
exploded
silly