From the Merriam-Webster

From Merriam-Webster’s Unabridged Dictionary

Main Entry:peace£able
Etymology:Middle English pesible, pesable, paisible, from Middle French pesible, paisible, from pes, pais peace + -ible * more at PEACE

1 a : disposed to peace : having an amicable disposition disinclined to strife : not contentious or quarrelsome   b : lacking noisiness or restlessness : quietly behaved : CALM
2 : marked by freedom from war, strife, hostilities, or disorder