"Strong optimism" refers to a sense of positivity that extends beyond just a positive outlook. It is an unshakable belief in the future and a firm conviction that things will turn out well. Some synonyms for "strong optimism" include unwavering hopefulness, fierce positivity, unyielding courage, undaunted confidence, unshakeable faith, and resolute determination. These terms speak to the sheer force of will and perseverance required to maintain such a mindset, despite any challenges or setbacks. Those who possess strong optimism have a steadfast belief in their ability to create positive change and overcome obstacles, and their unwavering positivity serves as a beacon of hope for others.