Insurrection (4)
'insurrection' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for riot that I've seen before include "Civil disturbance" , "Rowdy behaviour" , "Violent disturbance by mob" , "Debauchery" , "Civil unrest" .)
'insurrection' is the definition.
(mutiny is a kind of insurrection)
This is all the clue.
(Other definitions for mutiny that I've seen before include "Open rebellion by sailors or soldiers" , "Rebellion as on Bligh's Bounty" , "Military rebellion" , "Rebellion in the armed forces" , "Revolt against authority" .)