(adj) lacking distinct or individual characteristics; dull and uninteresting, Syn. nondescript, Example:women dressed in nondescript clothes; a nondescript novel
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
a. [ Pref. non- + L. descriptus described. ] 1. Not hitherto described; hence, of no recognizable type or class; odd; abnormal; unclassifiable. [ 1913 Webster ]
2. Dull or uninteresting; undistinguished. [ PJC ]