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HYPHEN
WORDNET DICTIONARY
OXFORD DICTIONARY
THESAURUS

WORDNET DICTIONARY

Noun dukedom has 2 senses

• dukedom(n = noun.state) Array - the dignity or rank or position of a duke; Array
is a kind of rank
Derived forms noun duke₁, noun duke₂

• dukedom(n = noun.location) duchy - the domain controlled by a duke or duchess; Array
is a kind of demesne, domain, land
Derived forms noun duke₁, noun duke₂

OXFORD DICTIONARY

THESAURUS

dukedom

ally, archduchy, archdukedom, baronetcy, barony, body politic, buffer state, captive nation, chieftaincy, chieftainry, city-state, colony, commonweal, commonwealth, country, county, domain, dominion, duchy, earldom, empery, empire, free city, grand duchy, kingdom, kingship, knight-errantship, knighthood, ladyship, land, lordship, mandant, mandate, mandated territory, mandatee, mandatory, marquisate, nation, nationality, pashadom, polis, polity, possession, power, princedom, princeship, principality, principate, protectorate, province, puppet government, puppet regime, queenship, realm, republic, satellite, seignioralty, seigniory, seneschalty, settlement, sovereign nation, state, sultanate, superpower, territory, toparchia, toparchy, viscountcy, viscountship, viscounty

For further exploring for "dukedom" in Webster Dictionary Online