Observant quality (8)
I believe the answer is:
keenness
(Other definitions for keenness that I've seen before include "Avidity" , "Fervour" , "Enthusiasm" , "Penetrating quality" , "Eagerness" .)
I believe the answer is:
keenness
(Other definitions for keenness that I've seen before include "Avidity" , "Fervour" , "Enthusiasm" , "Penetrating quality" , "Eagerness" .)