出典:Wiktionary
A borrowing of Latin genius loci (“tutelary deity of a/the place”), from the singular genitive form of locus (“place”).
genius loci (複数形 genii loci または genii locorum)
In English, genius loci is often italicized as a Latin phrase. It employs the Latin nominative plural but is usually not otherwise grammatically declined. The plural form genii loci describes multiple spirits overseeing a single place; the plural form genii locorum describes multiple spirits overseeing multiple places; and the latter should not be confused with genius locorum, which describes a single spirit overseeing multiple places.
the Genius of Famine
賢いこと
智あり
He is wise.
a wise man
the genius of the constitution