Wordnet 3.0
ADJECTIVE (1)
1. 
 not published; 
- Example: "unpublished letters and diaries"
The Collaborative International Dictionary of English v.0.48:
Unpublished \Unpublished\
   See published.
WordNet (r) 3.0 (2006):
unpublished
    adj 1: not published; "unpublished letters and diaries" [ant:
           published]