1. Trembling or quivering with excitement, fear, or anticipation.
* Example: "Her voice was aquiver with emotion as she shared her story."
2. Shaking or vibrating slightly.
* Example: "The air was aquiver with the sound of distant thunder."
3. Having a slight trembling motion.
* Example: "The leaves on the trees were aquiver in the gentle breeze."
In essence, "aquiver" describes a state of subtle, but noticeable movement, often associated with strong emotions or external stimuli.