on its way out
supernumerary
obsolescent
redundancy
pleonastic
Betamax
redundundant
irredundance
obsolesce
go out with the ark
superannuate
kick at an open door
obsolescence
antiquation
go by the wayside
carry coals to Newcastle
redundantly
obsolete
obsoleteness
outdate
reredundant
hibernation
stultification
rustiness
deadening
impairment
plow the sands
constipation
erasability
rattletrap
dying gasp
erasure
wasteable
toshy
down the toilet
run to waste
drecky
obsoletor
obsoleter
wastage
voidable
antiquate
laid-off
redundantant
kill
bang one's head against a brick wall
outmode
go spare
bungle
defective on arrival
decommissioning
scrappable
retrofitting
dismantleable
deshelve
dissipate
boondoggle
maintaining
staleness
good-for-nothing
howl at the moon
botched
derelictness
awaste
antiredundancy
wear out
doodlebug
piss in the wind
outdatedness
servicing
undermaintain
like painting the Forth Bridge
vitiate
displacement activity
stagnate
dilapidation
Abundita
futility
recycling
power-assisted
waste of time
exhaustible
strung out
incomplete
eradicability
use up
desolation
void
ruin
burn
pound sand
lapse
disrepair
good for nothing