Third-person singular simple present indicative form of vacillate.(verb)
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Use "vacillates" in a sentence
"The Apple store is too variable even stuff in the same series on the same label vacillates between 128 kbps and 256 kbps and once you've got it, that's it, as far as Apple is concerned."
"Aguirre, Weber's latest piece of minimal techno (or "sonic house," he calls it) under the Pantha du Prince moniker vacillates between extremes of the sublime and the stilted, the gorgeous and the slightly boring, confident auteurism plus brushes with self-parody."
"Though he despises Owen, Stockard vacillates between his desire to let the priest be killed and his inclination to help defend him against Baptise."