Obs. [ad. L. type *excelsitūdo, f. excels-us lofty: see EXCELSE and -TUDE.] Highness, majesty.

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c. 1470.  Harding, Chron., CLXXVIII. xvi. Thei … putte their cause to God his hie excelsitude.

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1599.  Nashe, Lenten Stuffe, 22. To chaunt and carroll forth the Alteza an excelsitude of this monarchall fludy Induperator.

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1730–6.  in Bailey (folio).

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1775.  in Ash.

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  b.  humorously. As a title or form of address; = HIGHNESS.

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1599.  Nashe, Lenten Stuffe, Ep. Ded. Your diminutiue excelsitude and compendiate greatnesse.

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