A slight change or effect that spreads gradually.

To cause a series of events or changes as a result of an initial action.

To move in a way that resembles small waves.

A small wave or series of waves on the surface of water.

To move in small waves or to cause small waves to form.

A slight effect or change that spreads gradually.

To spread or cause to spread in a gradual way.

A small wave or series of waves on the surface of water.

To create small waves or movements on a surface.