The ancient ruins stood as a testament to the once-great civilization, their crumbling stones weathered to a hoary grey.
Hoary conventions of polite behavior governed the interactions of the aristocratic class.
Her grandmother was famous for telling hoary stories of ghostly encounters that always sent shivers down her spine.
The hoary topic of politics dominated the conversation at the dinner party.
As I flipped through the dusty pages of the old book, I came across a hoary observation that still rang true today.

Hoary (Adjective)