English Reference

Word

incendiary

Phoneticsin·cen·di·ary

US/ˌɪnˈsɛndiɛɹi/

UK/ɪnsˈɛndjəɹi/

Definitions

01causing fire

C1

adj. designed to cause fires, especially when used as a weapon.

adj. capable of, or used for, causing fire; specifically relating to devices or substances designed to ignite on impact.

“The soldiers were warned about the danger of incendiary bombs in the area.”

“The investigation revealed that an incendiary device had been planted in the basement to ensure the structure was completely destroyed by the blaze.”

Technical

Antonyms

fireproofextinguishing

02stirring up anger

C1

adj. likely to make people very angry or cause a lot of trouble and fighting.

adj. tending to stir up conflict, strife, or strong emotion; intentionally provocative or inflammatory in nature.

“The politician was criticized for his incendiary comments about the new law.”

“The journalist's incendiary rhetoric was blamed for escalating the tensions between the two rival factions during the election cycle.”

Formal

Synonyms

03a fire-causing weapon

C2

n. a bomb or other object that is designed to start a fire.

n. a weapon, such as a bomb, containing a substance that burns with intense heat.

“The aircraft dropped several incendiaries over the target zone.”

“Military historians noted that the use of incendiaries during the siege led to unprecedented levels of civilian displacement and urban destruction.”

Technical

Synonyms

firebomb

04a person who stirs up trouble

C2

n. someone who intentionally starts arguments or causes social unrest.

n. a person who excites or inflames factions into quarrels or rebellion.

“He was known as a political incendiary who loved to challenge the government.”

“The authorities viewed the speaker not as a legitimate critic, but as a dangerous incendiary determined to undermine the stability of the region.”

Literary · Formal

Synonyms

agitatorfirebrandtroublemaker

Antonyms

peacemaker

Real-World Examples

“Last week, the US state department published an incendiary video declaring that “American dominance in the western hemisphere will never be questioned again”.”
The Guardian · 16 Aug 2026
“Guardian Australia has unearthed several incendiary comments from Whitten and fellow One Nation senators Pauline Hanson and her longtime lieutenant Malcolm Roberts, about transgender Australians.”
The Guardian · 15 Aug 2026

Etymology

From Middle English incendiarie, from Old French incendiaire, from Latin incendiārius (“setting alight”), from incendium (“destructive fire”), from incendō (“I set on fire, kindle”), from in- (“into, in, on, upon”) + candeō (“I am hot”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C1 · Advanced
Frequency
Occasional
Updated

Scan code

englishreference.com/q/incendiary

English Reference