lasting
permanent
age-long
aged
ancient
antique
changeless
chronic
commorant
constant
continuing
continuous
diuturnal
durable
dwelling
enduring
evergreen
firm
fixed
frozen
hardy
immobile
immutable
in residence
indefatigable
intact
intransient
inveterate
inviolate
living
living in
lodging
long-lasting
long-lived
long-standing
long-term
longeval
longevous
macrobiotic
never-failing
of long duration
of long standing
perdurable
perduring
perennial
perpetual
persistent
biding
chiding
coinciding
colliding
confiding
deciding
deriding
dividing
gliding
guiding
hiding
presiding
providing
residing
riding
siding
sliding
striding
subsiding
tiding