This chapter presents commonly used terms in the study of postcolonialism. The terms listed begin with the alphabet “I”. Detailed explanation is provided for several terms, including imaginative geography, imperialism, indentured labour, and infantilization. Each entry includes the origin of the term; a detailed explanation of its perceived meaning; and examples of the term's use in literary‐cultural texts. Imaginative geography reads cultural difference into space and spatial difference into cultures. While colonialism in postcolonial studies is used to refer to the domination and control of non‐European places/people by Europeans settled in that space, imperialism is the principle behind the colonial project. Indentured labour describes a system of labour put into place in the Caribbean, Mauritius and other parts of the European empires after the end of the slave trade around the 1830s. More importantly, infantilization implied a certain kind of power relation between the adult white and the child native.