vacillate
verb (used without object)
to waver in mind or opinion; be indecisive or irresolute.
Used to describe an ongoing action or state that is currently taking place in the immediate present.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
I cannot yet give him the text, because I am vacillating between two themes,—and to predict a plan is with me to make the whole effort pall and disgust me.
From Charles Lever, His Life in His Letters, Vol. I by Edmund Downey