Meaning

• Shaking or trembling.

  "a shaky hand"

• Nervous, anxious.

  "He’s a nice guy but when he talks to me, he acts shaky."

• (of wood) Full of shakes or cracks; cracked.

  "shaky timber"

• Easily shaken; tottering; unsound.

  "a shaky constitution"

• Wavering; undecided.