an ‧ ar ‧ chy /ˈænəki $ -ər-/ BrE AmE noun [uncountable]
[ Date: 1500-1600 ; Language: Medieval Latin ; Origin: anarchia , from Greek , from anarchos 'having no ruler' , from an- 'without' + archos 'ruler' ]
a situation in which there is no effective government in a country or no order in an organization or situation:
The prison is close to anarchy.
The classroom was in a constant state of anarchy.
slide/fall/descend into anarchy
The nation is in danger of falling into anarchy.