Swing about can be replaced with a variety of synonyms depending on the context in which it is used. In certain situations, it may be more appropriate to say pivot, rotate, twirl, spin, or whirl. These words are often associated with circular or rotational movements. In other instances, swing about can be substituted with turn, veer, shift, or change direction. These words are often linked with motion or movement in a specific direction. Replace swing about with sway, oscillate, or wave to convey a back-and-forth movement, similar to the motion of a pendulum. Overall, there are several synonymous expressions that can be used in place of swing about, depending on the desired meaning and context.