mŏnarchĭa

ae, f.
I. absolute rule, monarchy (post-class. for unius dominatio, imperium singulare, regnum, regalis potestas), Capitol. Max. and Balb. 14; Tert. adv. Prax. 14; Lact. 1, 5, 23.
Lewis & Short
A Latin Dictionary, 1879
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