bonanza /bə-nanˈzə or bəʊ- or bo-/

1. A rich mine or vein of precious ore (N American)
2. A large amount of (usu) silver
3. Any source of wealth or stroke of luck

Very prosperous

• overpopulations
• overpost
• overposted
• overposting
• overposts
• overpower
• overpowered
• overpowering
• overpoweringly
• overpowers
• overpraise
• overpraised
• overpraises
• overpraising
• over-precise
• overpreparation
• overprepare
• overprepared
• overprepares
• overpreparing
• overpress
• overpressed
• overpresses
• overpressing
• overpressure