1) living or growing in the fields or woods
1a) of animals, wild, savage
1b) of countries, wild, uncultivated, unreclaimed
2) of men and animals in a moral sense, wild savage, fierce
2a) boorish, rude
2b) of any violent passion, vehement, furious
Part of Speech: adjective
From G68; wild (as pertaining to the country), literally (natural) or figuratively (fierce): - wild, raging.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ἄγριος; click on the second column to search for that grammatical form of the root ἄγριος; click on the third column to search for that word and grammatical form; click on the total to search for the root ἄγριος.