vibrate

This term describes a rapid, oscillating motion that is often felt as a hum or a shudder. It is frequently used in technical contexts to describe mechanical resonance or the behavior of electronic devices, conveying a sense of high-frequency energy. When applied to human emotion, it suggests an internal tension that manifests as a physical tremor. This usage typically implies an intensity of feeling, such as rage or fear, that is barely contained and leaks out through a shaking voice or body.