Under proper regulation or control; in good order as to arrangement or management; well-ordered.
The Century Dictionary (Public Domain)
Use "well-regulated" in a sentence
"Moreover, dancing was consigned to private, well-regulated spaces."
"Under a well-regulated Commonwealth, the People must be wise virtuous and cannot be otherwise."
"Offshore havens have come under increasing pressure over the past few years to relinquish bank secrecy and promote themselves as well-regulated financial centers."