'''Ìdọ́bajẹÀdájọba''' tabi '''ÀdájọbaÌdọ́bajẹ''' (''monarchy'') je [[form of government|iru ijoba]] kan nibi ti gbogbo agbara oloselu wa patapata tabi ni oloruko lowo enikan tabi awon eyan kan. Gege bi ohun oloselu, oludajoba ni [[head of state|olori orile-ede]], won wa nipo yi titi di igba ti wo ba ku tabi [[abdication|sakuro]] lori ite, be sini "o je yiyasoto kuro lodo gbogbo awon omo egbe orile-ede miran."<ref name="Bouvier">"Bouvier, John, and Francis Rawle. ''[http://books.google.com/books?id=lWs8AAAAIAAJ Bouvier's Law Dictionary and Concise Encyclopedia]''. 1914. 2237-2238.</ref> Eni toun solori ijoba adajoba ni aunpe ni '''adobaje''' tabi '''oludajoba'''. Iru ijoba yi lo wopo laye nigba [[Ancient world|ijoun]] ati [[Middle Ages|oju dudu]].
Lowolowo, awon orile-ede 44 ni won ni oludajoba gege bi awon olori orile-ede, 16 ninu won je [[Commonwealth realm|Ile Ajoni]] ti won gba [[Queen Elizabeth II]] gege bi olori orile-ede won.
