Definition of synarchy in English:

synarchy

noun

mass noun
  • Joint rule or government by two or more individuals or parties.

    ‘the Foreign Inspectorate of Customs was a product of synarchy’
    • ‘This resulted in a system of synarchy, a system of joint administration by British officials and local elites.’
    • ‘Under synarchy, growth-based economics will cease to be the basis for planetary management.’
    • ‘By the turn of the century, the royalist faction came to fear synarchy, whose influence had spread beyond esoteric groups.’

Origin

Mid 18th century: from Greek sunarkhia, from sunarkhein ‘rule jointly’.

Pronunciation

synarchy

/ˈsɪnɑːki/