Synonyms for Empire:

n.

affiliate, base, the biz, blue-chip, big business, agent, anchor, agency, account. biome, the Antarctic, the Celtic fringe, Asia-Pacific, Central America, Atlantic Rim, australasia, the Caribbean, climate, the Arctic. domain (noun)
federation, union, imperialism.
empire (noun)
conglomerate.
place ruled by sovereign; rule (noun)
domain, federation, realm, union.
possession (noun)
effects, land, possession, wealth, realm, worth, property, acquisition, territory, holding, kingdom.
property (noun)
estate, principal, goods, real estate, possessions, manor, chattel, fixtures, legacy, farm, assets, ground, Resources, stock, title, belongings, inheritance, ranch, realty.
region (noun)
city, field, region, canton, district, circuit, tract, commonweal, duchy, bailiwick, area, division, shire, county, sector, state, colony, country, plot, municipality, riding, locality, domain, precinct, beat, place, parcel, lot, dukedom, neighborhood, province, town, nation, borough, zone, quarter, earldom.

Other synonyms:

Other relevant words:
conglomerate, federation, imperialism, union.

Usage examples for empire

  1. He had crushed them effectually, since he could not otherwise prevent them from disturbing his empire – Irish Race in the Past and the Present by Aug. J. Thebaud
  2. Well, no wonder; more Empire history had been made today than in the years since he had come to the Throne. – Ministry of Disturbance by Henry Beam Piper
  3. He took quiet possession of the agitated trembling creature who had carried her empire over herself too far. – The Doctor's Family by Mrs. (Margaret) Oliphant