teenage Antonyms

not as young as one was old as time not long for this world no spring chicken over the hill grey-haired gray-haired long in the tooth doddery doddering white-haired older than dirt older than the hills not as young as one used to be in one's dotage long in the teeth grey-bearded advanced in years up in years extremely old as old as time as old as the sea past it uncollectible of age older grey full-grown elderly elder dotard decrepit centenarian ancient aging aged grizzled hoary age-old venerable senior senile senescent ripe old octogenarian nonagenarian mature adult