Not clear (7)
'not clear' is the definition.
(I know that obscure is the opposite attribute of clear)
This is all the clue.
(Other definitions for obscure that I've seen before include "unimportant" , "Gloomy" , "Overshadow or eclipse" , "Like Jude, not well known" , "Hard to make out" .)
'not clear' is the definition.
(I know this)
This is the entire clue.
(Other definitions for opaque that I've seen before include "Cloudy, not transparent" , "Puzzling - dull" , "Not transparent, difficult to understand" , "Impervious to light - hard to understand" , "Hazy, unclear" .)
(Other definitions for indistinct that I've seen before include "Obscure" , "Not clearly defined" , "Blurred" .)