oldhood en · NOUN
Etymology
From old + -hood. Compare Old English ealdhād (“eld, old age”).
Meanings
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(uncountable) The state or condition of being old; the stage of life where one is advanced in age; old age
So just in case you might be curious, in case you might want to know, I shall try to put down whatever I remember of my childhood and of my life in general... my remembrances of childhood, adulthood, and oldhood.
2004, Stephen F. Neubauer, Joan R. Neubauer, The Noble Generation, volume 2, page ix:The property of couple having no child is also inherited by the husband's brother's sons who take responsibility of oldhood and performing death rituals, family ceremonies.
2006, Talwar Sabanna, Globalisation and WTO, page 675:
Synonyms
hoariness · golden years · agedness (condition of being old) · eld · codgerhood (old age) · ancientness