Rioter

noun
1.
a noisy, violent public disorder caused by a group or crowd of persons, as by a crowd protesting against another group, a government policy, etc., in the streets.
2.
Law. a disturbance of the public peace by three or more persons acting together in a disrupting and tumultuous manner in carrying out their private purposes.
3.
violent or wild disorder or confusion.
4.
a brilliant display:
a riot of color.
5.
something or someone hilariously funny:
You were a riot at the party.
6.
unrestrained revelry.
7.
an unbridled outbreak, as of emotions, passions, etc.
8.
Archaic. loose, wanton living; profligacy.
verb (used without object)
9.
to take part in a riot or disorderly public outbreak.
10.
to live in a loose or wanton manner; indulge in unrestrained revelry:
Many of the Roman emperors rioted notoriously.
11.
Hunting. (of a hound or pack) to pursue an animal other than the intended quarry.
12.
to indulge unrestrainedly; run riot.
verb (used with object)
13.
to spend (money, time, etc.) in riotous living (usually followed by away or out).
Idioms
14.
run riot,

to act without control or restraint:
The neighbors let their children run riot.
to grow luxuriantly or abundantly:
Crab grass is running riot in our lawn.

noun
1.

a disturbance made by an unruly mob or (in law) three or more persons; tumult or uproar
(as modifier): a riot gun, riot police, a riot shield

2.
boisterous activity; unrestrained revelry
3.
an occasion of boisterous merriment
4.
(slang) a person who occasions boisterous merriment
5.
a dazzling or arresting display: a riot of colour
6.
(hunting) the indiscriminate following of any scent by hounds
7.
(archaic) wanton lasciviousness
8.
run riot

to behave wildly and without restraint
(of plants) to grow rankly or profusely

verb
9.
(intransitive) to take part in a riot
10.
(intransitive) to indulge in unrestrained revelry or merriment
11.
(transitive) foll by away. to spend (time or money) in wanton or loose living: he has rioted away his life