-aster

Borrowed from Ancient Greek ᾰ̓στήρ (ăstḗr, “star; celestial body”).

-aster m (feminine -astra, neuter -astrum or -astron)

1. Used to create genera relating to stars; most commonly applied to echinoderms such as starfish and brittle stars.

Learned borrowing from Latin -aster (“little, petty, partial, incomplete”).

-aster

1. Used to form diminutive and pejorative nouns, labeling someone pretending to be what they are not.

   ‎poet + ‎-aster → ‎poetaster (“unskilled poet”)

   ‎critic + ‎-aster → ‎criticaster (“petty critic”)

   ‎pillar + ‎-aster → ‎pilaster (“pillar that does not provide support”)

• teras, earst, reast, treas., taser, setar, stare, TASer, arste, Stear, sater, stear, tares, Satre, tarse, Sater, arets, tears, resat, rates, Aerts, Aters, Tesar, 'earts, Taser

• -astrum

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

• (Classical Latin) IPA^(key): [ˈas.tɛr]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈas.t̪er]

-aster (feminine -astra, neuter -astrum); first/second-declension suffix (nominative masculine singular in -er)

1. suffix 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”)

   ‎philosophus (“philosopher”) + ‎-aster → ‎philosophaster (“petty, charlatan philosopher; philosophaster”)

First/second-declension suffix (nominative masculine singular in -er).

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