unusually mature (10)
I believe the answer is:
precocious
(Other definitions for precocious that I've seen before include "Forward" , "ahead in development" , "early talent" , "Advanced" , "Early in developing" .)
I believe the answer is:
precocious
(Other definitions for precocious that I've seen before include "Forward" , "ahead in development" , "early talent" , "Advanced" , "Early in developing" .)