Dictionary.net

• The right of a property owner or tenant to enjoy his or her property without interference. Disruption of quiet enjoyment may constitute a nuisance. Leases and rental agreements often contain a "covenant of quiet enjoyment," expressly obligating the landlord to see that tenants have the opportunity to live undisturbed.

2010 - Legal Glossary Database
By Oddity Software

• The term quiet here does not mean that there is no noise. Here it means that there is no outside interference with an activity. An activity is enjoyed without the interference of another or superior party.

1910 - Black's Law Dictionary (2nd edition)
By Henry Campbell Black