adult
grownup
Methuselah
ancient
antediluvian
back-number
centenarian
curmudgeon
dodderer
dodo
dotard
fogey
fogy
fossil
graybeard
greybeard
has-been
nonagenarian
octogenarian
old boy
old man
old woman
septuagenarian
sexagenarian
aprosodia
artizan
bannerman
carlin
cavalla
crafter
emcee
fellow
fighting-man
fourth-year
garden-bed
hackman
mender
new-fledged
oldsters
quodammodo
sheepdog
six-hundred
third-year
toand
topknot
wet-nosed
winos
youngster