Precarious

pre·car·i·ous/priˈke(ə)rēəs/

Adjective:

Not securely held or in position; dangerously likely to fall or collapse. Dependent on chance; uncertain. pre·car·i·ous   [pri-kair-ee-uhs] adjective 1. dependent on circumstances beyond one's control;uncertain; unstable; insecure: a precarious livelihood. 2. dependent on the will or pleasure of another; liable to bewithdrawn or lost at the will of another: He held a precarious tenure under an arbitrary administration. 4. having insufficient, little, or no foundation: a precarious assumption. precarious  (prɪˈkɛərɪəs)    — adj 1. liable to failure or catastrophe; insecure; perilous 2. archaic  dependent on another's will