Shaking or trembling; as, a shaky spot in a marsh; a shaky hand.
source: Webster 1913
adjective satellite
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.
source: WordNet 3.0
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.