Definition: 1. to sway to and fro; flutter, 2. to flicker or quiver, as light, 3. to become unsteady; begin to fail or give way, 4. to shake or tremble, as the hands or voice, 5. to feel or show doubt, indecision, etc.

Example: She was just about to waver in making her decision.

Synonyms: vacillate, fluctuate