Calm-natured (6)
I believe the answer is:
placid
(Other definitions for placid that I've seen before include "Still - US lake" , "Calm; equable" , "Cool and unruffled" , "or is it an American one?" , "Tranquil, unruffled" .)
I believe the answer is:
placid
(Other definitions for placid that I've seen before include "Still - US lake" , "Calm; equable" , "Cool and unruffled" , "or is it an American one?" , "Tranquil, unruffled" .)