senescent

elderly

ancient antediluvian antiquated antique gray oldie shot worn

age-old been around creaky getting on moth-eaten over the hill passé rusty senior citizen timeworn venerable worse for wear

fresh modern new recent up-to-date young

unripe youthful

aging getting on getting up in years gray-haired white-haired

growing old out-of-date out-of-fashion

aged ancient anile decrepit doddering doting enfeebled feeble imbecile in second childhood infirm old shattered sick weak

alert well young

crumbling declining developing fading fermenting maturing mellowing slumping stale waning

getting along getting on wearing out