quiver

This word captures a specific type of vibration that is rapid and small in amplitude. When used as a verb, it often signals an internal emotional state, such as fear, excitement, or grief, manifesting as a physical tremor. It differs from a shudder, which is typically a more violent or singular convulsion. As a noun, the word has two entirely distinct meanings. One refers to the physical act of trembling, while the other refers to a specialized container for archery. These two senses are homonyms and are not semantically related.