Apricity (noun) (obs)
The warmth of the sun on a cold winter’s day.
Obsolete, this word was used in the 1600s, I think we should bring it back!
“The apricity of the day was a big allure, despite the frost.”
The last stage of life; old age.
Senectitude comes from the Medieval Latin noun senectitūdō meaning “old age,” which in turn comes from Classical Latin senectūs, a derivative of the noun senex meaning “old man.” Senectitude entered English in the late 1700s, more precisely, in 1796 in Jonathan Swift’s Gulliver’s Travels