(intransitive) To become business, in order to resist volatilization; to cease to stream or be fluid; to congeal; to become hard and malleable, to be a metallic substance. rope up - connect to one another, for security; "The mountaineers roped up once they began the ultimate ascent" vi (US inf: https://beauxrgwj.targetblogs.com/38220817/not-known-facts-about-fixed-chocolate