A crucial imperative for decolonial praxis in the liberal settler colony is to radically delegitimise the prevailing social order. This is regarded as necessary to achieving genuinely decolonial forms of social transformation rather than merely the ongoing modification of colonial rule. I propose here, however, that such objectives depend not simply on delegitimising the colonial regime as such, but also on finding ways to expose and challenge its resources of legitimating power, that is, the capacity to shape and reshape perceptions (...) of legitimacy in the public sphere, and thus render legitimacy a moving rather than static target for opponents. I explore, here, the potential for a basic democratic grammar of contestation to be utilised in this task. The promise of such a grammar lies in its permanent availability to problematise rule arranging powers in the public sphere, and thus work to expose their unjustified nature. It also carries a threat, however, in that its public activation always arouses a broader array of normative forces, some aspects of which might oppose or undermine decolonial objectives. Whilst the democratic grammar holds promise for challenging liberal legitimating power, then, it must also be treated with caution from a decolonial perspective. (shrink)