abidingness, advanced age, advanced years, age, age of retirement, an incurable disease, anility, animal spirits, animate existence, animation, antiquity, being alive, birth, caducity, constancy, continuance, debility, decline of life, declining years, decrepitude, defeat of time, defiance of time, diuturnity, dotage, durability, durableness, duration, eld, elderliness, endurance, existence, feebleness, green old age, hale old age, haleness, hardiness, having life, heartiness, hoary age, immortality, infirm old age, infirmity, infirmity of age, lastingness, life, lifetime, liveliness, living, long-lastingness, long-livedness, long life, long standing, lustiness, maintenance, old age, oldness, pensionable age, perdurability, perennation, permanence, perpetuity, persistence, ricketiness, ripe old age, robustness, ruggedness, second childhood, senectitude, senility, senior citizenship, spriteliness, stability, standing, steadfastness, strength, superannuation, survival, survivance, the downward slope, the golden years, vale of years, viability, vigor, vigorousness, vitality, vivacity, white hairs