The phrase "a vacillation" is correct and usable in written English.
It can be used to describe a situation where someone is indecisive or fluctuates between different opinions or actions.
Example: "Her constant vacillation on the issue made it difficult for the team to move forward with the project."
Alternatives: "an indecision" or "a fluctuation".
What follows is a vacillation between pedestrian postmodern tasks — rolling out tarps, rolling in them, arranging plastic that catches the light — and a more virtuosic and spectacular mode.
The problem involves a vacillation between two different conditions under which mental concepts and terms are dropped.
You could say my recovery has basically been a vacillation between those two states.
And Ryan's whole persona has become a lie; a vacillation of positions even to the point of contradicting his own record.
Each row represents a free-choice trial (saturated-color trace) that was identified as containing a vacillation using both brain areas.
Because crossing the zero value is a criterion for determining a vacillation, it seems important to ensure that decoded values computed before the maze onset are not artificially biased, as this could potentially affect the labeling of trajectories as vacillations.
Or maybe it would be more accurate to say that the death of the actual Bin Laden and the fictitious Voldemort confirmed a shift — a temporary vacillation or an epochal pendulum swing — in the character of American nightmares.
In the language of the Sermon on the Mount, there is what seems a strange vacillation between promising, on the one hand, to "the poor in spirit" "the kingdom of heaven," and, on the other, to "the meek" that "they shall inherit the earth".
In this view, Hamlet is a creature of endless vacillation, a cipher for the alienated, inward modern self in a world that is insubstantial and rotten: "Denmark's a prison," Hamlet sighs.
If Peter's confession demonstrates his faith and insight, his denial that he knew Jesus demonstrates a weakness of will (even if momentary), capability of inaction, and a tendency toward vacillation, but not a loss of faith.
After an initial vacillation, during which he went from condemning the attacks and US foreign policy to espousing outrageous conspiracy theories, he settled on a fairly consistent position against the war in Afghanistan.
