treperiti

1. (of light, stars) to flicker; to twinkle
   Zvezde su treperile iznad grada. — The stars twinkled above the city.
   Sijalica u hodniku stalno treperi. — The bulb in the hallway keeps flickering.
2. to quiver; to tremble
   Lišće treperi na vetru. — The leaves quiver in the wind.
   Glas joj je treperio od uzbuđenja. — Her voice trembled with excitement.