Expugnation, which means conquest or seizure, can be replaced with alternative words to add variety to your writing. Synonyms for expugnation include subjugation, overthrow, triumph, victory, acquisition, and domination. Each of these words carries slightly different connotations, with subjugation implying a more lasting conquer and domination connotating a more complete and total takeover. Overthrow and triumph suggest an overthrow of an existing power structure, while acquisition refers more specifically to a physical taking of something. By using synonyms for expugnation, you can add depth and complexity to your writing while avoiding repetition. Experiment with different synonyms to find the most effective word for your specific context.