immortal
abiding
age-long
aged
amaranthine
ancient
antique
changeless
chronic
colorfast
constant
continuing
deathless
deep-dyed
diuturnal
double-dyed
durable
dyed-in-the-wool
embalmed
enduring
ever-fresh
evergreen
everlasting
fadeless
fast
firm
fixed
frozen
hardy
immarcescible
immobile
immutable
imperishable
incorruptible
indelible
ingrain
ingrained
intact
intransient
inveterate
inviolate
lasting
long-lasting
long-lived
long-standing
long-term
longeval
changeful
dewy
jewel-like
maleficent
natural-looking
never-fading
opalescent
pearly
peerless
rose-like
roseate
spring-like
springtide
starlike
starry
supremest
unclouded
vernal
wax-like
wild-rose
wilt
fading