anile
crabbed
debilitated
decrepit
doddered
doddering
doddery
feeble
fossilized
gerontal
infirm
mossbacked
moth-eaten
mummylike
palsied
papery-skinned
ravaged with age
rickety
run to seed
rusty
senile
shaky
shriveled
stricken in years
timeworn
tottering
tottery
weak
withered
wizened