"Tremblings" is a word commonly associated with shaking or quivering, and there are several synonyms that can be used to convey a similar meaning. One such synonym is "tremors," which refers to involuntary shaking movements. Another synonym is "quivers," which is defined as a rapid, tremulous movement. "Shivers" is another synonym that conveys the idea of sudden, involuntary shaking, often resulting from fear or cold. "Shudders" is a similar word that refers to a strong, involuntary bodily reaction caused by fear or horror. "Shakes" is a generic term that can refer to any type of bodily shaking or quivering.