lost momentum
- stalledStopped unexpectedly
- falteredLost momentum or confidence
- slowedReduced velocity
- fizzledFailed after promising start
- stagnatedCeased all forward movement
derailed · sputtered · flagged · waned · petered out · grinding halt · brakes · inertia · setback · plateau · stumbled · faded · deflated · stuck · uphill · headwind · resistance · exhausted
kinetic energy/motion
lost momentumaccelerated
Increased in velocity
picked up speed · sped up · gathered steam · ramped up · intensified
progress/advancement
lost momentumgained traction
took off · broke through · snowballed · picked up steam · gathered pace
psychological/motivational energy
lost momentumcaught fire
Began to burn
rallied · recharged · reinvigorated · doubled down · bounced back