a suffix used in the formation of adjectives: eidetic.
Origin of -etic
< Latin -eticus, Greek -etikos, equivalent to -et-, a formative occurring in some nouns + -ikos -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin and History for -etic
word-forming element meaning "pertaining to," from Greek -etikos, adjectival suffix for nouns ending in -esis.
Online Etymology Dictionary, © 2010 Douglas Harper