What does Agapētus mean in Latin?

Agapētus, a proper noun, means “a male given name from Ancient Greek, equivalent to English Agapetus”.

What is the genitive of Agapētus?

The genitive singular is Agapētī. Agapētus is masculine, second declension.

proper noun · masculinesecond declension

Agapētus m (genitive Agapētī)

From Ancient Greek Ᾰ̓γᾰπητός (Ăgăpētós), from ᾰ̓γᾰπητός (ăgăpētós, “beloved”), from ᾰ̓γᾰπᾰ́ω (ăgăpắō, “to love”) + -τός (-tós, “masculine suffix”).