a diminutive or pejorative suffix denoting something that imperfectly resembles or mimics the true thing: criticaster; poetaster, oleaster.
Origin of -aster1
Definition for -aster (2 of 2)
Chiefly Biology. a combining form with the meaning “star,” used in the formation of compound words: diaster.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for -aster
suffix forming nouns
a person or thing that is inferior or bears only a poor resemblance to what is specifiedpoetaster
Word Origin for -aster
from Latin: suffix indicating imperfect resemblance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012