Annexationist refers to a person or group that advocates for the acquisition of new territories or the expansion of a country's borders. Some synonyms for annexationist include expansionist, imperialist, colonizer, conqueror, hegemonist, and subjugator. These terms all describe individuals or groups with a desire for power and control over new territories or peoples. While they may differ in their nuances and connotations, they all reflect a similar ideology of dominance and the pursuit of territorial gain. Annexationism has been a controversial issue throughout history, with both proponents and opponents arguing for its merits or drawbacks. Regardless of one's position, it's important to consider the perspectives of all parties involved and examine the potential consequences of annexationist policies.