Defn: One who undoes anything; especially, one who ruins another.
UNDOING
Un*do"ing, n.
1. The reversal of what has been done.
2. Ruin. "The utter undoing of some." Hooker.
UNDOMESTICATE
Un`do*mes"ti*cate, v. t. Etym: [1st pref. un- + domesticate.]
Defn: To make wild or roving.
UNDONE
Un*done",
Defn: p. p. of Undo.
UNDONE
Un*done", a. Etym: [Pref. un- not + done.]
Defn: Not done or performed; neglected.