Definition of for the sake of argument in US English:

for the sake of argument

phrase

  • As a basis for discussion or reasoning.

    • ‘Suppose for the sake of argument that the government controls the export of capital.’
    • ‘Suppose, however, for the sake of argument, that he lied.’
    • ‘Let us suppose, just for the sake of argument, that some big-time editor reads a self-published novel and decides to offer the writer a two-book contract on the strength of it.’
    • ‘Let us suppose, for the sake of argument, that this guard did in fact stop to think things over carefully.’
    • ‘The examples that follow are discussed simply for the sake of argument because they do not occur in Hebrew historiography.’