Examples from the Web for well-guarded
It's just that those in charge have diverted that wealth into a deep well that sits on their well-guarded estates.
So the workings went on, and spread and ramified into the many acres surrounding the single so well-guarded entrance.On the Mexican Highlands|William Seymour Edwards
In a well-guarded camp all were settled before the moon rose, and never was rest more needed by animals and men.Wild Bill's Last Trail|Ned Buntline
For two or three days, sometimes even for five, the queen's lament will be heard, the fierce challenge to her well-guarded rivals.The Children's Life of the Bee|Maurice Maeterlinck
British Dictionary definitions for well-guarded (1 of 2)
adjective (well guarded when postpositive)
British Dictionary definitions for well-guarded (2 of 2)
Word Origin and History for well-guarded
c.1500, past participle adjective from guard (v.). Meaning "reserved and cautious in speech, behavior, etc." is from 1728. Related: Guardedly; guardedness.