WordWeb Online

1. Inclined to shake as from weakness or defect
   "a wobbly chair with shaky legs";
   - rickety, wobbly, wonky [informal]
    
2. Vibrating slightly and irregularly; as e.g. with fear, cold or like the leaves of an aspen in a breeze
   "seemed shaky on her feet";
   - shivering, trembling, aquiver, quivery, atremble
    
3. Not secure; beset with difficulties
   "a shaky marriage";
   - precarious

Derived forms: shakier, shakiest

See also: insecure, unsafe, unstable, unsteady

Encyclopedia: Shaky