IPA: /ɪmˌpɪəriˈælɪstɪk/
KK: /ɪmˈpɪrɪəlɪstɪk/
Relating to a policy or practice where a country extends its power and influence over other countries, often through colonization or military force.
The nation's imperialistic ambitions led to conflicts with neighboring countries.
Imperialistic → It is formed from "imperium" (from Latin, meaning command or empire) and "-istic" (meaning pertaining to). The word "imperialistic" refers to the ideology or policy pertaining to the expansion of an empire or dominance over other nations.
Think of 'imperium' which means command or empire, and remember that 'imperialistic' relates to the idea of expanding an empire.