The Oxford Thesaurus An A-Z Dictionary of Synonyms - shaky adj.

1) uncertain, wobbly, unstable, precarious, unsound, flimsy, weak, unsteady, unsupported, unsubstantiated, undependable, unreliable, tenuous, untrustworthy, dubious, questionable, doubtful, Colloq iffy: The evidence against him is very shaky indeed. 2) wobbly, wobbling, unstable, precarious, dilapidated, ramshackle, on its last legs, decrepit, falling down or apart, rickety, flimsy, unsteady, insecure, unsound, unsubstantial, insubstantial, feeble: Surely, you can't expect that shaky old chair to support your weight!