Lacking intellectual rigour (7)
I believe the answer is:
shallow
(Other definitions for shallow that I've seen before include "Not profound" , "Without depth" , "Having little depth" , "flimsy" , "Of water, not deep" .)
I believe the answer is:
shallow
(Other definitions for shallow that I've seen before include "Not profound" , "Without depth" , "Having little depth" , "flimsy" , "Of water, not deep" .)