[まさ, masa] (n, n-pref) (1) (See 従・じゅ) greater (of equal court ranks); upper; senior; (2) (しょう only) (See 長官・かみ) director (highest of the four administrative positions of the ritsuryo period); chief; (pref) (3) (しょう only) (before a number) exactly; precisely#784
[おおき, ooki] (pref) (1) (arch) great; grand; large; (2) (also written as 正) (See 従・ひろき) greater (of equal court ranks); upper; senior; (n, adj-na) (3) (See 大きに) a great deal; very much#3899