-phobic or -phoboussuff.1. Having a fear of or an aversion for: xenophobic.2. Lacking an affinity for: lyophobic.[Late Latin -phobicus, from Greek -phobikos, from -phobi?, -phobia.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.pho?bic (?fo? b?k) adj. 1. of, pertaining to, or afflicted with a phobia or phobias. n. 2. a person suffering from a phobia. [1895?1900] -phobic a combining form used to form adjectives corresponding to nouns ending in -phobe: acrophobic; xenophobic. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.