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The Collaborative International Dictionary
Supereminency

Supereminence \Su`per*em"i*nence\, Supereminency \Su`per*em"i*nen*cy\, n. [L. supereminentia.] The quality or state of being supereminent; distinguished eminence; as, the supereminence of Cicero as an orator, or Lord Chatham as a statesman.
--Ayliffe.

He was not forever beset with the consciousness of his own supereminence.
--Prof. Wilson.

Wiktionary
supereminency

n. (alternative form of supereminence English)