Modifies a noun

• leader: A revolutionary party facing vacillating centrist leaders must demonstrate clarity and steadfastness; one has to be firm to steady the unsteady.

• element: What arguments did the vacillating elements advance against us?

• character: A vacillating character easily influenced by people of stronger personality than himself, Arran nevertheless had a great talent for self-preservation.

• policy: But the SAP is being driven to disintegration by the vacillating, indecisive policies of Seydewitz, and of Walcher as well.