swung — simple past tense and past participle of swing1 .
fluctuated — to change continually; shift back and forth; vary irregularly: The price of gold fluctuated wildly last month.
alternated — Simple past tense and past participle of alternate.
undulated — to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement: The flag undulates in the breeze.
lurched — Archaic. the act of lurking or state of watchfulness.
switched — a hairpiece consisting of a bunch or tress of long hair or some substitute, fastened together at one end and worn by women to supplement their own hair.
swiveled — a fastening device that allows the thing fastened to turn around freely upon it, especially to turn in a full circle.