en
incendiary device
/ɪnˈsɛndiˌɛri dɪˈvaɪs/
Definition
1
A device, such as a bomb or grenade, specifically designed to ignite a fire or cause widespread combustion.
2
A metaphorical term describing someone or something that provokes intense argument, radical change, or social unrest.
Examples
My aunt's unfiltered opinion on politics at Thanksgiving acts as a social incendiary device, usually resulting in the stuffing being served with a side of pure resentment.
The intern's decision to reply-all to the CEO's company-wide email was an absolute incendiary device that burned down morale for the entire quarter.
He arrived at the calm meeting with his new proposal, which was essentially an incendiary device designed to force the committee into immediate, chaotic restructuring.