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outdated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