An interval of meditation, serious and grateful, was the best corrective of everything dangerous in such high-wrought felicity; and she went to her room, and grew steadfast and fearless in the thankfulness of her enjoyment.
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But then, that’s who Helene is: Her faith is steadfast.
Sabaa Tahir -- An Ember in the Ashes
Moving apace with the river was a long single-file line of men, eyes aimed at their feet, shoulders tense, walking steadfastly nowhere.