Not deep (11)
'not deep' is the definition.
(I know this)
This is the entire clue.
(Other definitions for shallow that I've seen before include "Without depth" , "Superficial" , "Insincere" , "Of waters, not deep" , "Not profound" .)
'not deep' is the definition.
('superficial' is the opposite to 'deep')
This is all the clue.
(Other definitions for superficial that I've seen before include "Cursory" , "Not profound" , "12 [TWO DIMENSIONAL]" , "Far from thorough" .)
(Other definitions for perfunctory that I've seen before include "Done as a formality only" , "Merely formal" , "Hasty and superficial" , "Careless or cursory" , "Not thorough" .)