Obstinate and unruly; strongly opposed to something.
Not affected by great heat.
Difficult to treat.
Incapable of registering a reaction or stimulus.
A material or piece of material, such as a brick, that has a very high melting point.
Unrestrained and boisterous; degenerate or dissolute.
Having the characteristics of a riot.
Causing, inciting or taking part in a riot.