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-istic

American  
  1. a suffix of adjectives (and in the plural, of nouns from adjectives) formed from nouns ending in -ist and having reference to such nouns, or to associated nouns ending in -ism (deistic; euphuistic; puristic ). In nouns, it usually has a plural form (linguistics ).


-istic British  

suffix

  1. equivalent to a combination of -ist and -ic but in some words having a less specific or literal application and sometimes a mildly pejorative force, as compared with corresponding adjectives ending in -ist

    communistic

    impressionistic

"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

Etymology

Origin of -istic

< Latin -isticus < Greek -istikos; in some words, replacing -istique < French < Latin, as above