Anarchism is a political philosophy that advocates self-governed societies based on voluntary institutions. These are often described as stateless societies, although several authors have defined them more specifically as institutions based on non-hierarchical free associations. Anarchism holds the state to be undesirable, unnecessary and harmful. 

While anti-statism is central, anarchism specifically entails opposing authority or hierarchical organisation in the conduct of all human relations, including—but not limited to—the state system. Anarchism is usually considered a far-left ideology and much of anarchist economics and anarchist legal philosophy reflects anti-authoritarian interpretations of communism, collectivism, syndicalism, mutualism or participatory economics. 

Anarchism does not offer a fixed body of doctrine from a single particular world view, instead fluxing and flowing as a philosophy. Many types and traditions of anarchism exist, not all of which are mutually exclusive. Anarchist schools of thought can differ fundamentally, supporting anything from extreme individualism to complete collectivism. Strains of anarchism have often been divided into the categories of social and individualist anarchism or similar dual classifications. 

The word "" is composed from the word "anarchy" and the suffix "-ism", themselves derived respectively from the Greek , i.e. "anarchy" (from , "anarchos", meaning "one without rulers"; from the privative prefix ἀν- ("an-", i.e. "without") and , "archos", i.e. "leader", "ruler"; (cf. "archon" or , "arkhē", i.e. "authority", "sovereignty", "realm", "magistracy")) and the suffix or ("-ismos", "-isma", from the verbal infinitive suffix -ίζειν, "-izein"). The first known use of this word was in 1539. Various factions within the French Revolution labelled opponents as anarchists (as Robespierre did the Hébertists) although few shared many views of later anarchists. There would be many revolutionaries of the early nineteenth century who contributed to the anarchist doctrines of the next generation, such as William Godwin and Wilhelm Weitling, but they did not use the word "anarchist" or "anarchism" in describing themselves or their beliefs.
What is Anarchism?
That believes what?
What do they believe about the state?
Do they like authority?
Do they follow a set standard?
What is one of the two main classifications of anarchists?
The other?
What language is the work anarchy derived from?
What does it mean?
When was the word first used?
a political philosophy
Anarchism is a political philosophy
in self-governed societies based on voluntary institution
 that advocates self-governed societies based on voluntary institution
as stateless
These are often described as stateless
no
Anarchism holds the state to be undesirable, unnecessary and harmful. 

no
Anarchism does not offer a fixed body of doctrine 
individualist anarchism
individualist anarchism 
social anarchism
social and individualist anarchism
Greek
derived respectively from the Greek
one without rulers
meaning "one without rulers
1539
use of this word was in 1539