Un*cer"tain*ty (?), n.; pl. Uncertainties (&?;).

1. The quality or state of being uncertain.

2. That which is uncertain; something unknown.

Our shepherd's case is every man's case that quits a moral certainty for an uncertainty.

Un*cer"tain*ty (?), n.; pl. Uncertainties (&?;).

1. The quality or state of being uncertain.

2. That which is uncertain; something unknown.

Our shepherd's case is every man's case that quits a moral certainty for an uncertainty.

• doubt; the condition of being uncertain or without conviction.
  
• Something uncertain or ambiguous.
  
• (mathematics) A parameter that measures the dispersion of a range of measured values.