The Collaborative International Dictionary
Undecide
Undecide \Un`de*cide"\, v. t. [1st pref. un- + decide.] To reverse or recant, as a previous decision.
Wiktionary
undecide
vb. (context transitive English) To reverse or recant (a previous decision).
Usage examples of "undecide".
As it was, she was weary of hearing all the planning and talking, and deciding, and undeciding, and redeciding, before it was possible for her to go.