Business adopted a terminology of sustainability to defend, then justify, and finally explain practices that acknowledged resource limitations as inherent in the business environment. Tracing the rhetoric across a half century of business use demonstrates an expansion of the concept of sustainability to encompass managerial attention to finite human, capital, and political resources. A rhetoric of sustainability seemed to promise a revolution in management practice, and practitioners have indeed adopted principles of complex systems. The sustainability terminology retains its narrower focus on environmentally responsible corporate activities, however, and management communication pedagogy has not yet recognized the emerging discourse of adaptive communication practices.