Anarchism without adjectives is a pluralist tendency of anarchism that opposes sectarianism and advocates for cooperation between different anarchist schools of thought. First formulated by the Spanish anarchists Ricardo Mella and Fernando Tarrida del Mármol, as a way to bridge the ideological divide between the collectivists and communist factions, it was later adopted by the Italian anarchist Errico Malatesta and the American individualist Voltairine de Cleyre.

Anarchism is a political philosophy and movement that is against all forms of authority and seeks to abolish the institutions it claims maintain unnecessary coercion and hierarchy, typically including the state and capitalism. Anarchism advocates for the replacement of the state with stateless societies and voluntary free associations. As a historically left-wing movement, this reading of anarchism is placed on the farthest left of the political spectrum, usually described as the libertarian wing of the socialist movement.