potentate /pōˈtən-tāt/

1. A powerful ruler
2. A monarch

• hydromancy
• hydromania
• hydromanias
• hydromantic
• hydromechanics
• hydromedusa
• hydromedusae
• Hydromedusae
• hydromedusan
• hydromedusas
• hydromedusoid
• hydromel
• hydromels
• hydrometallurgy
• hydrometeor
• hydrometeorology
• hydrometeors
• hydrometer
• hydrometers
• hydrometric
• hydrometrical
• hydrometries
• hydrometry
• Hydromys
• hydronaut