LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Īnsteius

Īnsteius m sg (genitive Īnsteiī or Īnsteī)
Classical[ĩːˈstɛj.jʊs]Ecclesiastical[inˈstɛː.jus]

Meaning

  1. a Roman nomen gentile, gens or "family name" famously held by
  2. Attius Insteius Tertullus, a Roman prefect

Declension

declension
formsingularplural
nominativeĪnsteius—
genitiveĪnsteiī
Īnsteī		—
dativeĪnsteiō—
accusativeĪnsteium—
ablativeĪnsteiō—
vocativeĪnsteī—

Quick answers

What does Īnsteius mean in Latin?
Īnsteius, a proper noun, means “a Roman nomen gentile, gens or "family name" famously held by”.
What is the genitive of Īnsteius?
The genitive singular is Īnsteiī. Īnsteius is masculine, second declension.
How do you pronounce Īnsteius?
In classical Latin, [ĩːˈstɛj.jʊs]; in ecclesiastical (church) Latin, [inˈstɛː.jus].