Origin of kept
Examples from the Web for well-kept
Millions of dollars in renovation later the building is gorgeous—Clean, well-kept, organized.His First Day Out Of Jail After 40 Years: Adjusting To Life Outside|Justin Rohrlich|January 3, 2015|DAILY BEAST
It features the Charlotte Nature Museum, a well-kept baseball field, and a large body of water.
If that personal commitment exists on the part of Obama, it has been a well-kept secret.
Over time I discovered that nursing an older child is a well-kept parenting secret.The Bogus Breastfeeding Debate Over Nursing Older Kids|Diane Wiessinger|May 22, 2012|DAILY BEAST
How Amanda explained these same things to her parents is a well-kept secret.
There was a well-kept lawn in front of it, with here and there a trim flower-bed to relieve the monotony of the expanse of grass.The Lost Valley|J. M. Walsh
The dooryard blazed with red flowers, and the well-kept lawn was lined by earth beds spangled with blooms in colors beyond count.Our Young Aeroplane Scouts in Germany|Horace Porter
Fortunately for Nat, the room proved clean and well-kept, and the bed was better than the one he had used at the farm.From Farm to Fortune|Horatio Alger Jr.
What once had been well-kept lawns were now covered with articles which would have been much better left in their proper places.Bullets & Billets|Bruce Bairnsfather
A gruff-looking man sat upon the front veranda, as he entered the well-kept yard, and eyed him with an expression of suspicion.Fritz to the Front|Edward L. Wheeler