[pre.car.i.ous] adj [L precarius obtained by entreaty, uncertain--more at prayer] (1646) 1: depending on the will or pleasure of another
2: dependent on uncertain premises: dubious "~ generalizations" 3 a: dependent on chance circumstances, unknown conditions, or uncertain developments b: characterized by a lack of security or stability that threatens with danger syn see dangerous -- pre.car.i.ous.ly adv -- pre.car.i.ous.ness n