What does diplōmatārius mean in Latin?

diplōmatārius, a noun, means “who has the job of drafting diplōmata”.

What is the genitive of diplōmatārius?

The genitive singular is diplōmatāriī. diplōmatārius is masculine, second declension.

In classical Latin, [dɪ.pɫoː.maˈtaː.ri.ʊs]; in ecclesiastical (church) Latin, [di.plo.maˈtaː.ri.us].

noun · masculinesecond declension

diplōmatārius m (genitive diplōmatāriī)

Classical[dɪ.pɫoː.maˈtaː.ri.ʊs]Ecclesiastical[di.plo.maˈtaː.ri.us]

From diplōma + -ārius.

adjectivefirst/second-declension adjective

diplōmatārius²

diplōmatārius (feminine diplōmatāria, neuter diplōmatārium)

Classical[dɪ.pɫoː.maˈtaː.ri.ʊs]Ecclesiastical[di.plo.maˈtaː.ri.us]

singular
form	masculine	feminine	neuter
nominative	diplōmatārius	diplōmatāria	diplōmatārium
genitive	diplōmatāriī	diplōmatāriae	diplōmatāriī
dative	diplōmatāriō	diplōmatāriae	diplōmatāriō
accusative	diplōmatārium	diplōmatāriam	diplōmatārium
ablative	diplōmatāriō	diplōmatāriā	diplōmatāriō
vocative	diplōmatārie	diplōmatāria	diplōmatārium

plural
form	masculine	feminine	neuter
nominative	diplōmatāriī	diplōmatāriae	diplōmatāria
genitive	diplōmatāriōrum	diplōmatāriārum	diplōmatāriōrum
dative	diplōmatāriīs	diplōmatāriīs	diplōmatāriīs
accusative	diplōmatāriōs	diplōmatāriās	diplōmatāria
ablative	diplōmatāriīs	diplōmatāriīs	diplōmatāriīs
vocative	diplōmatāriī	diplōmatāriae	diplōmatāria

From diplōma + -ārius.