Zemindary is a term that refers to the land system used in India during the colonial era, whereby a landowner had the right to collect taxes on behalf of the British government. This word may not have many synonyms within the context of Indian history, but there are related terms that can be used to convey a similar meaning. For example, the term "feudalism" refers to a social and economic system where a lord or monarch grants land to vassals in exchange for their loyalty and military service. Another term that can be used as a synonym is "landlordism," which refers to the practice of owning and renting out land for profit. Overall, while there may not be many synonyms for zemindary specifically, there are related terms that can be used to convey a similar idea within different contexts.