What does perfluus mean in Latin?

perfluus, a adjective, means “flowing, undulating; effeminate”.

How do you pronounce perfluus?

In classical Latin, [ˈpɛr.fɫu.ʊs]; in ecclesiastical (church) Latin, [ˈpɛr.flu.us].

adjectivefirst/second-declension adjective

perfluus (feminine perflua, neuter perfluum)

Classical[ˈpɛr.fɫu.ʊs]Ecclesiastical[ˈpɛr.flu.us]

singular
form	masculine	feminine	neuter
nominative	perfluus	perflua	perfluum
genitive	perfluī	perfluae	perfluī
dative	perfluō	perfluae	perfluō
accusative	perfluum	perfluam	perfluum
ablative	perfluō	perfluā	perfluō
vocative	perflue	perflua	perfluum

plural
form	masculine	feminine	neuter
nominative	perfluī	perfluae	perflua
genitive	perfluōrum	perfluārum	perfluōrum
dative	perfluīs	perfluīs	perfluīs
accusative	perfluōs	perfluās	perflua
ablative	perfluīs	perfluīs	perfluīs
vocative	perfluī	perfluae	perflua

perflŭus, a, um, adj. perfluo,

I. flowing, undulating.—Transf., effeminate, wanton (post-class.): incessus, App. M. 11, p. 260, 36.

From perfluō (“to stream, float”) + -us.