trembling
adjective
[ ˈtrɛmb(ə)lɪŋ ]
• shaking or quivering, typically as a result of anxiety, excitement, or frailty.
• "she passed the letter with a trembling hand to Henry"
trembling
noun
• the action or fact of shaking or quivering, typically as a result of anxiety, excitement, or frailty.
• "the disease is a degenerative disorder that causes trembling of the hands, arms, or legs"
tremble
verb
• (of a person, a part of the body, or the voice) shake involuntarily, typically as a result of anxiety, excitement, or frailty.
• "Isobel was trembling with excitement"
Origin:
Middle English (as a verb): from Old French trembler, from medieval Latin tremulare, from Latin tremulus (see tremulous).
