On the verge of becoming obsolete: moribund customs; a moribund way of life. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "moribund" in a sentence
"The reviewers 'criticism says a lot about the failure of our cultural establishment to acknowledge any interesting creative departure in what they are insistent on calling the moribund form of the novel -- despite all evidence to the contrary."
"The entrance of Mr. Prokhorov, 45, into politics could enliven a domestic political scene that even Kremlin officials have called moribund."
"Across town, the China Grill restaurant at the Park Hyatt hotel is also enjoying a surge in business, though as recently as three years ago, the same hotel that is fully booked had to create special promotions to stoke business during what had been traditionally known as a moribund period."