1. firmly fixed in place; not subject to change
2. loyal and committed in attitude or belief

Examples

• She remained steadfast in her commitment to helping others.
• The lighthouse stood steadfast against the stormy waves.
• His steadfast support helped her through difficult times.
• The team showed steadfast determination throughout the season.
• Despite criticism, she held steadfast to her principles.
• The old oak tree remained steadfast through many seasons.
• He was a steadfast friend who never let me down.