Serene, tranquil, peaceful.
The definition of pacified is: to bring or restore to a state of peace or tranquillity; quiet; calm
Progesterone is the hormone that helps keep the myometrium calm and quiet during gestation. It inhibits uterine contractions and promotes a state of relaxation to support the pregnancy.
Peaceful, quiet are synonyms of calm.
The dictionary definition for quiet is no noise (silent, hushed)
To bring to a state of peace, quiet, ease, calm, or contentment; pacify; soothe: to appease an angry king.
"Stillness" rhymes with darkness and means calm, quiet, or still.
quiet
quiet, serene, calm, still, peaceable, undisturbed
to calm down; to be quiet
calm, quiet, soothe
"Tula" in Zulu means "rest" or "be still." It is often used to encourage someone to be calm or quiet.
Stillness, calm, tranquility; peace of mind.