n. One who doubts; one whose opinion is unsettled; one who scruples. [ 1913 Webster ]
a. Formidable; dread. “Some redoubted knight.” Spenser. [ 1913 Webster ]
Lord regent, and redoubted Burgandy. Shak. [ 1913 Webster ]
a. Not doubted; not called in question; indubitable; indisputable;