What does lāmentātrīx mean in Latin?

lāmentātrīx, a noun, means “lamenter, bewailer (female)”.

What is the genitive of lāmentātrīx?

The genitive singular is lāmentātrīcis. lāmentātrīx is feminine, third declension.

In classical Latin, [ɫaː.mɛnˈtaː.triːks]; in ecclesiastical (church) Latin, [la.menˈtaː.triks].

noun · femininethird declension

lāmentātrīx f (genitive lāmentātrīcis)

Classical[ɫaː.mɛnˈtaː.triːks]Ecclesiastical[la.menˈtaː.triks]

lāmentātrix, īcis, f. lamentator,

I. she who bewails, Vulg. Jer. 9, 17.

From lāmentor, lāmentātum (“to lament”, verb) + -trīx f (“-ess”, agentive suffix).