1) one whose speech is rude, rough and harsh
2) one who speaks a foreign or strange language which is not understood by another
3) used by the Greeks of any foreigner ignorant of the Greek language, whether mental or moral, with the added notion after the Persian war, of rudeness and brutality. The word is used in the N.T. without the idea of reproachfulness.
Part of Speech: adjective
Citing in TDNT: 1:546, 94
Of uncertain derivation; a foreigner (that is, non Greek): - barbarian (-rous).
|b native people||11.94|
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 βάρβαρος; click on the second column to search for that grammatical form of the root βάρβαρος; click on the third column to search for that word and grammatical form; click on the total to search for the root βάρβαρος.