穏健 （オンケン） quiet, dependable, uniform, (politically) moderate

温和 （オンワ） mild (climate), temperate, clement, pleasant, agreeable, gentle (nature, personality, etc.), mild, quiet, pleasant, moderate (statement, measure, etc.), mild, temperate

安穏 （アンノン） peace, quiet, tranquility, tranquillity

無事平穏 （ブジヘイオン） peace and quiet, safe and peaceful, tranquil and uneventful

穏やか （おだやか） calm, quiet, gentle, peaceful, mild, moderate, reasonable, amicable