What does Manichaeus mean in Latin?

Manichaeus, a noun, means “a Manichaean”.

What is the genitive of Manichaeus?

The genitive singular is Manichaeī. Manichaeus is masculine, second declension.

In classical Latin, [ma.nɪˈkʰae̯.ʊs]; in ecclesiastical (church) Latin, [ma.niˈkɛː.us].

noun · masculinesecond declension

Manichaeus m sg (genitive Manichaeī, feminine Manichaea)

Classical[ma.nɪˈkʰae̯.ʊs]Ecclesiastical[ma.niˈkɛː.us]

Borrowed from Ancient Greek Μανιχαῖος (Manikhaîos).

Descendants

adjectivefirst/second-declension adjective

Manichaeus²

Manichaeus (feminine Manichaea, neuter Manichaeum)

Classical[ma.nɪˈkʰae̯.ʊs]Ecclesiastical[ma.niˈkɛː.us]

singular
form	masculine	feminine	neuter
nominative	Manichaeus	Manichaea	Manichaeum
genitive	Manichaeī	Manichaeae	Manichaeī
dative	Manichaeō	Manichaeae	Manichaeō
accusative	Manichaeum	Manichaeam	Manichaeum
ablative	Manichaeō	Manichaeā	Manichaeō
vocative	Manichaee	Manichaea	Manichaeum

plural
form	masculine	feminine	neuter
nominative	Manichaeī	Manichaeae	Manichaea
genitive	Manichaeōrum	Manichaeārum	Manichaeōrum
dative	Manichaeīs	Manichaeīs	Manichaeīs
accusative	Manichaeōs	Manichaeās	Manichaea
ablative	Manichaeīs	Manichaeīs	Manichaeīs
vocative	Manichaeī	Manichaeae	Manichaea

Borrowed from Ancient Greek Μανιχαῖος (Manikhaîos).

Descendants

proper noun · masculinesecond declension

Manichaeus³

Manichaeus m sg (genitive Manichaeī)

Classical[ma.nɪˈkʰae̯.ʊs]Ecclesiastical[ma.niˈkɛː.us]

Borrowed from Ancient Greek Μανιχαῖος (Manikhaîos).

Descendants

What does Manichaeus mean in Latin?: Manichaeus, a noun, means “a Manichaean”.
What is the genitive of Manichaeus?: The genitive singular is Manichaeī. Manichaeus is masculine, second declension.
How do you pronounce Manichaeus?: In classical Latin, [ma.nɪˈkʰae̯.ʊs]; in ecclesiastical (church) Latin, [ma.niˈkɛː.us].