What is the meaning of trembling?

noun

• A shaky motion.
  • usage: "the shaking of his fingers as he lit his pipe"
  • synonyms: shaking, shakiness, quiver, quivering, vibration, palpitation

verb

• Move or jerk quickly and involuntarily up and down or sideways.
  • usage: "His hands were trembling when he signed the document"
  • synonyms: tremble

adjective

• Vibrating slightly and irregularly; as e. G. With fear or cold or like the leaves of an aspen in a breeze.
  • usage: "a quaking bog"; "the quaking child asked for more"; "quivering leaves of a poplar tree"; "with shaking knees"; "seemed shaky on her feet"; "sparkling light from the shivering crystals of the chandelier"; "trembling hands"
  • synonyms: shaky, shivering