10
duchy(noun, region)
5
domain(noun, region)
5
kingdom(noun, region)
4
empire(noun, region)
4
realm(noun, region)
4
territory(noun, region)
3
archduchy
3
colony(noun, region)
3
commonweal(noun, region)
3
country(noun, region)
3
county(noun, region)
3
earldom(noun, region)
3
nation(noun, region)
3
principality
3
province(noun, region)
3
state(noun, region)
2
barony(noun, estate, duchy)
2
land
2
mandate
1
ally
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APASmart Define. (2015). dukedom thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/dukedom/thesaurus/synonyms
ChicagoSmart Define. 2015. "dukedom thesaurus" https://smartdefine.org/dukedom/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, dukedom thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/dukedom/thesaurus/synonyms>.
MLASmart Define. "dukedom thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/dukedom/thesaurus/synonyms>