Which of the following words is closest in meaning to “Tremulous”?

Tremulous means trembling or quivering.

• Correct answer - trembling: it has the same meaning as Tremulous.
• nervous personality: an anxious temperament - wrong, it does not mean the same as Tremulous.
• insufficient: not enough - wrong, it does not mean the same as Tremulous.
• domineering: overbearing - wrong, it does not mean the same as Tremulous.