1. A geographic region experiencing economic, social, or demographic deterioration, characterized by loss of population, jobs, or infrastructure investment
The declining area faced high unemployment and urban decay.
A área em declínio enfrentava alto desemprego e deterioração urbana.
2. A neighborhood or district showing signs of decreased property values and reduced commercial activity
Many businesses left the declining area in search of better locations.
Muitos negócios deixaram a área em declínio em busca de melhores localizações.