-aster

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”)

• philosophaster

• 'earts, Aters, Sater, TASer, Taser, Tesar, arste, earst, rates, reast, resat, setar, stare, stear, tares, tarse, taser, tears, teras

• -astrum

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

• (Classical) IPA^(key): /ˈas.ter/, [ˈas.tɛr]
• (Ecclesiastical) IPA^(key): /ˈas.ter/

-aster m (genitive -astrī); second declension

1. suffix of nouns, expressing incomplete resemblance, hence generally pejorative.

   ‎pater (“father”) + ‎-aster → ‎patraster (“father-in-law, step-father”)

Second declension, nominative singular in -er.