shaky in WordNet English dictionary

1. not secure; beset with difficulties
   "a shaky marriage"
   precarious  shaky 
   
2. inclined to shake as from weakness or defect
   "a rickety table"; "a wobbly chair with shaky legs"; "the ladder felt a little wobbly"; "the bridge still stands though one of the arches is wonky"
   rickety  shaky  wobbly  wonky 
   
3. vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze
   "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"
   shaky  shivering  trembling