Losing momentum is a common occurrence that can cause a decline in progress, performance, or growth. Synonyms for this phrase include slowing down, faltering, stalling, plateauing, getting sidetracked, running out of steam or hitting a roadblock. These words suggest a decrease in speed, strength, and progress, causing a sense of frustration or disappointment. Other related expressions include losing ground, losing traction, falling behind, running out of steam, or petering out. The loss of momentum can happen in many areas of life, such as work, sports, and personal goals. It's important to take steps to reignite one's motivation and passion to avoid lowering the energy level and keep moving forward.