Little known (7)
I believe the answer is:
obscure
'little known' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for obscure that I've seen before include "Uncertain; indistinct" , "Like Jude, not well known" , "Indistinct or not well-known" , "Jude may be" , "Little-known" .)