tranquillity russian

• умиротворе́ние

  serenity, tranquillity, peace of mind

  pacification, appeasement, conciliation

• безмяте́жность

  serenity, tranquillity, placidity

• успоко́енность

  complacency, self-satisfaction, carefree calm

  calmness, tranquillity, peace of mind

Examples

• В доме царила приятная безмятежность.

  A pleasant tranquillity reigned in the house.