The word "tractious" means unruly and is used as an adjective or an adverb.
No, the word 'unruly' is an adjective, a word that describes a noun. The abstract noun form of the adjective unruly is unruliness.
Your kids are so unruly!
The unruly child will take a time out, now.
The unruly crowd refused to disperse despite repeated warnings from the police.
"Not according to (expected) rules" is a literal meaning of the English word "unruly." The word operates as an adjective whose synonyms include "intractable, undisciplined, ungovernable."
The children were so unruly that they had to be put in separate rooms for their afternoon naps.
Unruly crowds are also called mobs.
The official definition for the word mobbed is "crowd around (someone) in an unruly and excitable way in order to admire or attack them."
orderly, obedient, compliant
Most phrases can be understood by thinking about what each word means. Flash means fast! abrupt! quick! Mob is a crowd, often unruly. Action means to do. A "flash mob action" means a crowd that assembles quickly to do some intended act. However, most "flash mobs" do not act unruly; instead, they orchestrate and choreograph their 'doings'.
Lawlessness, nihilism, revolution, unruly...