<p><strong>Adjective</strong></p><ul><li>dependent on circumstances beyond one's control; uncertain; insecure: a precarious livelihood.</li><li>Synonyms: indeterminate, unsure</li><li>Antonyms: secure</li><li>dependent on the will or pleasure of another; liable to be withdrawn or lost at the will of another: He held a precarious tenure under an arbitrary administration.</li><li>Synonyms: undependable, unreliable, dubious, doubtful</li><li>Antonyms: reliable</li><li>exposed to or involving danger; dangerous; perilous; risky: the precarious life of an underseas diver.</li><li>Synonyms: hazardous</li><li>Antonyms: safe</li><li>having insufficient, little, or no foundation: a precarious assumption.</li><li>Synonyms: unfounded, baseless, groundless</li><li>Antonyms: well-founded</li></ul>