Slubberdegullion (noun) (obsolete)
A slobbering or dirty fellow, a worthless sloven.
1610s, from slubber “to daub, smear; behave carelessly or negligently
“He’s a filthy slubberdegullion and he’s not coming in my pub!”
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