Hostile challenges to planned organization change are common and challenging to deal with effectively. Little research has explained successful responses to such stakeholder hostility. To address this gap, we use the concept of readiness to characterize the content of hostile challenges. We also use rhetorical strategies based on speech act theory to describe options for responding to those challenges. Because change agents must choose among multiple strategies, we continue a line of research investigating relative preferences among them. Ultimately, our aim is to offer six lessons for change agents who face hostile challenges based on evidence from research.