LATIN DICTIONARYLexicon Latīnum
suffixfirst/second-declension suffix (nominative masculine singular in -er)

-aster

-aster (feminine -astra, neuter -astrum)
Classical[ˈas.tɛr]Ecclesiastical[ˈas.ter]

Meaning

  1. morphemesuffixsuffix of nouns or adjectives, expressing half, partial, or incomplete resemblance to the root word meaning; hence in some cases may be pejorative
    pater (“father”) + -aster → patraster (“father-in-law; stepfather”)
    pullus (“chicken”) + -astra → pullastra (“young hen; pullet”)

Origins

From suffix originally forming Ancient Greek nouns from verbs ending in -άζειν (-ázein).

Descendants
  • Catalan-astre
  • French-âtre
  • Italian-astro
  • Portuguese-astro
  • Romanian-astru
  • Spanish-astro
  • Sicilian-astru

Quick answers

What does -aster mean in Latin?
-aster, a suffix, means “suffix of nouns or adjectives, expressing half, partial, or incomplete resemblance to the root word meaning; hence in some cases may be pejorative”.
How do you pronounce -aster?
In classical Latin, [ˈas.tɛr]; in ecclesiastical (church) Latin, [ˈas.ter].