Practicality (7)
I believe the answer is:
realism
'practicality' is the definition.
(I know that realism is a type of practicality)
This is all the clue.
(Other definitions for realism that I've seen before include "Pragmatic view" , "True-to-life quality" , "Rationality" , "Unromantic view of the world" , "Accurate representation (in art)" .)