Father Time
Nestor
Old Paar
antediluvian
antique
back number
centenarian
conservative
dad
dodo
dotard
elder
fogy
fossil
fud
fuddy-duddy
gaffer
geezer
golden-ager
gramps
grandfather
grandsire
granny
graybeard
has-been
longhair
matriarch
mid-Victorian
mossback
nonagenarian
octogenarian
old believer
old chap
old codger
old crock
old dodo
old dog
old duffer
old fogy
old geezer
old gent
old gentleman
old liner
old man
old party
old poop
old woman
old-timer
older
oldster
patriarch