1) peculiar to an age, of youth, youthful, younger
1a) younger (than now)
1b) young, youthful
1c) younger (by birth)
1d) an attendant, servant, inferiority in rank
Part of Speech: adjective
From the compound of G3501; appertaining to younger persons, that is, juvenile: - youthful.
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 νεωτερικός; click on the second column to search for that grammatical form of the root νεωτερικός; click on the third column to search for that word and grammatical form; click on the total to search for the root νεωτερικός.