UNDOUBLE
Un*dou"ble, v. t. Etym: [1st pref. un- + double.]
Defn: To unfold, or render single.
UNDOUBTABLE
Un*doubt"a*ble, a.
Defn: Indubitable.
UNDOUBTED
Un*doubt"ed, a.
Defn: Not doubted; not called in question; indubitable; indisputable; as, undoubted proof; undoubted hero. — Un*doubt"ed*ly, adv.
UNDRAPE
Un*drape", v. t. Etym: [1st pref. un- + drape.]
Defn: To strip of drapery; to uncover or unveil.
UNDRAW
Un*draw", v. t. Etym: [1st pref. un- + draw.]
Defn: To draw aside or open; to draw back.
Angels undrew the curtain of the throne. Young.