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. L'Estrange.
UNCESSANT
Un*ces"sant, a.
Defn: Incessant. [Obs.] Dr. H. More.
— Un*ces"sant*ly, adv. [Obs.]
UNCHAIN
Un*chain", v. t. Etym: [1st pref. un- + chain.]
Defn: To free from chains or slavery; to let loose. Prior.
UNCHANCY
Un*chan"cy, a. Etym: [Pref un- + Scot. chancy fortunate, safe.]
1. Happening at a bad time; unseasonable; inconvenient. A. Trollope.
2. Ill-fated; unlucky. [Prov. Eng. & Scot.]