placid

• Mrs. Johnson was just the sort of person--placid, sympathetic, jolly--that any normal girl would love. —  The Girl Scouts' Good Turn
• Her worst anguish was yet to come Felipe did not know and could not have understood this; and it was with a marvelling gratitude that he saw Ramona, day after day, placid, always ready with a smile when he spoke to her. —  Ramona
• The boy's face was very placid, and as she looked at it she felt that if a single day of care and kindness had done so much, a year of patient cultivation would surely bring a grateful harvest from this neglected garden, which was already sown with the best of all seed by the little missionary in the night-gown CHAPTER IV. —  Little Men
• His parliamentary eloquence never blazed into sudden flashes of dazzling brilliancy; but its clear, placid, and mellow splendour was never for an instant overclouded. —  Critical and Historical Essays — Volume 1
• Abundant dark brown hair clustered in thick, natural folds round the broad forehead, and her blue eyes had the clear, calm gaze of a personality at once intelligent and strong-minded At this moment the young wife, whom Heideck had hitherto only known as the placid and unemotional lady of the world, certainly seemed to labour under some excitement, which she could not completely conceal. —  The Coming Conquest of England

Roget's II: The New Thesaurus

Used in the Same Context