To move back and forth in a gentle or unsteady manner, often in response to an external force such as wind or an earthquake, causing instability in physical objects or structures.

To experience a loss of stability or security in a situation, such as feelings, opinions, or positions, resulting in doubt, hesitation, or a shift from a previously firm stance.

To undergo fluctuations or changes that lead to uncertainty in one's circumstances or beliefs, indicating a lack of firmness or resoluteness.