LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Viriāthus

Viriāthus m sg (genitive Viriāthī)
Classical[wɪ.riˈaː.tʰʊs]Ecclesiastical[vi.riˈaː.tus]

Meaning

  1. A chief of the Lusitani who fought against the Romans

Declension

declension
formsingularplural
nominativeViriāthus—
genitiveViriāthī—
dativeViriāthō—
accusativeViriāthum—
ablativeViriāthō—
vocativeViriāthe—

Vĭrĭāthus or Vĭrĭātus, i, m.,
I. a celebrated leader of the Lusitanians in the war against the Romans, Liv. Epit. 52; 54; Vell. 2, 1, 3; 2, 90, 3; Flor. 2, 17 fin.; Cic. Off. 2, 11, 40; Val. Max. 6, 4, 2; Sil. 4, 354; 10, 219.—Vĭrĭāthīnus or Vĭrĭātīnus, a, um, adj., of or pertaining to Viriathus: bellum, Suet. Galb. 3.

Origins

Uncertain, either borrowed from Lusitanian [Term?] or Celtiberian [Term?]. The first part, viri-, is hypothesized to come from Proto-Indo-European *wiHrós (“man”) or maybe through Proto-Celtic *wiros (“man”) (from which Old Irish fer (“man”)).

In the Academy Smith's classical dictionaries

Quick answers

What does Viriāthus mean in Latin?
Viriāthus, a proper noun, means “A chief of the Lusitani who fought against the Romans”.
What is the genitive of Viriāthus?
The genitive singular is Viriāthī. Viriāthus is masculine, second declension.
How do you pronounce Viriāthus?
In classical Latin, [wɪ.riˈaː.tʰʊs]; in ecclesiastical (church) Latin, [vi.riˈaː.tus].