Acquisitive describes a person, a company, or a culture that wants to get things and keep them — money, land, objects, sometimes even other companies. It is about the hunger to own, not about being good at shopping. It often carries a slight frown: the writer thinks there is too much wanting. You can talk about an acquisitive collector, or an acquisitive firm that buys up everything around it. It is a formal, slightly bookish adjective. Everyday English might say greedy, but greedy is hotter and ruder; acquisitive is cooler and more about possession. Though actually, acquire can also be used for skills (“acquire a language”), but acquisitive almost never means “eager to learn.” It stays with things you can hold.