1. not worried, anxious, or disturbed; calm and peaceful

Examples

• She slept with an untroubled mind after finishing her project.
• The lake’s untroubled surface reflected the mountains perfectly.
• He remained untroubled by the criticism from his colleagues.
• The child’s untroubled laughter filled the playground.
• Despite the chaos around her, she maintained an untroubled expression.
• The village enjoyed an untroubled existence far from the city’s problems.