Uppermost
From BiblePortal Wikipedia
King James Dictionary [1]
UP'PERMOST, a. superl. upper and most.
1. Highest in place as the uppermost seats. 2. Highest in power or authority.
Whatever faction happens to be uppermost -
3. Predominant most powerful.
Vine's Expository Dictionary of NT Words [2]
Luke 11:43 Matthew 23:6 Mark 12:39Chief
Webster's Dictionary [3]
(a.) Highest in place, position, rank, power, or the like; upmost; supreme.