Of greatest size (7)
I believe the answer is:
largest
(Other definitions for largest that I've seen before include "Of greatest magnitude" , "Greatest in size" , "Biggest" , "Chief" , "Superlatively extensive" .)
I believe the answer is:
largest
(Other definitions for largest that I've seen before include "Of greatest magnitude" , "Greatest in size" , "Biggest" , "Chief" , "Superlatively extensive" .)