LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Symmachus

Symmachus m sg (genitive Symmachī)
Classical[ˈsym.ma.kʰʊs]Ecclesiastical[ˈsim.ma.kus]

Meaning

  1. masculinesingularA Roman cognomen — famously held by
  2. masculinesingularQuintus Aurelius Symmachus, a Roman orator

Declension

declension
formsingularplural
nominativeSymmachus—
genitiveSymmachī—
dativeSymmachō—
accusativeSymmachum—
ablativeSymmachō—
vocativeSymmache—

Symmăchus, i, m., Q. Aurelius,
I. a consul and prefect of Rome towards the end of the fourth century, distinguished as an orator and author of Epistulae in ten books, still extant; cf. Macr. S. 5, 1, § 7; Sid. Ep. 1, 1; Amm. 21, 12, 24; Aus. Ep. 17.—Hence, Symmăchĭānus, a, um, adj., of or belonging to Symmachus: illud dictum, Sid. Ep. 8, 10.

Origins

Borrowed from Ancient Greek Σύμμαχος (Súmmakhos).

In the Academy Smith's classical dictionaries

Quick answers

What does Symmachus mean in Latin?
Symmachus, a proper noun, means “A Roman cognomen — famously held by”.
What is the genitive of Symmachus?
The genitive singular is Symmachī. Symmachus is masculine, second declension.
How do you pronounce Symmachus?
In classical Latin, [ˈsym.ma.kʰʊs]; in ecclesiastical (church) Latin, [ˈsim.ma.kus].