Synonyms: shake, tremble, quake, quiver, shiver, shudder
These verbs mean to manifest involuntary vibratory movement. Shake is the most general: The floor shook when I walked heavily across the room. Tremble implies quick, rather slight movement, as from excitement, weakness, or anger: The speaker trembled as he denounced his opponents. Quake refers to more violent movement, as that caused by shock or upheaval: I was so scared that my legs began to quake. Quiver suggests a slight, rapid, tremulous movement: "Her lip quivered like that of a child about to cry" (Booth Tarkington). Shiver involves rapid trembling, as of a person experiencing chill: "as I in hoary winter night stood shivering in the snow" (Robert Southwell). Shudder applies chiefly to convulsive shaking caused by fear, horror, or revulsion: "She starts like one that spies an adder/ . . . The fear whereof doth make him shake and shudder" (Shakespeare).