Synonyms for Cagy (same or very similar meaning)
WordNet sense 1 (showing self-interest and shrewdness in dealing with others):
cagey, canny, cleverWordNet sense 2 (showing mental alertness and calculation and resourcefulness):
smartWordNet sense 3 (characterized by great cautious and wariness):
charyWordNet sense 4 (showing careful forethought):
cautiousFrom the ODE community, based on WordNetadd/edit