A tremor or shiver; the act/state of trembling (in the body, voice, hands, etc.) often caused by cold, fear, nervousness, or illness.
寒さで震えが止まらない。
I can't stop shivering from the cold.
緊張で手に震えが出て、字がうまく書けなかった。
My hands trembled from nervousness and I couldn't write well.
演説中、彼女の声に小さな震えが混じっていた。
During the speech, a slight quiver was audible in her voice.