calmness
n. B2 Upper Intermediate US //ˈkɑɫmnəs// UK //kˈɑːmnəs// calm·ness
n. the state of being quiet, peaceful, and not showing any strong feelings like anger or fear.
n. the state of being free from agitation, excitement, or disturbance; a state of mental or emotional tranquility.
The calmness of the lake made it perfect for swimming.
Despite the loud noise outside, the library remained filled with a deep sense of calmness.
The leader's calmness during the crisis prevented the situation from escalating further, allowing the team to focus on finding a solution.
From calm + -ness.