What does "uncertain" mean?

Uncertain: Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze. O woman! in our hours of ease, Uncertain, coy, and hard to please! Sir W. Scott.

Additional senses

  1. 2.Questionable; equivocal; indefinite; problematical. "The fashion of uncertain evils." Milton. From certain dangers to uncertain praise. Dryden.
  2. 3.Not sure; liable to fall or err; fallible. Soon bent his bow, uncertain in his aim. Dryden. Whistling slings dismissed the uncertain stone. Gay.
  3. 4.To make uncertain. [Obs.] Sir W. Raleigh.

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