IPA: /ɪnˈsɛn.dɪ.ɛr.i/
KK: /ɪnˈsɛndɪˌɛri/
Causing or able to cause fire; likely to provoke strong feelings or conflict.
The politician's incendiary remarks sparked a heated debate among the audience.
A person or thing that causes fires or incites conflict.
The police arrested the incendiary for starting the fire in the abandoned building.
Incendiary is formed from "incendere" (meaning to set on fire) and the suffix "-ary" (meaning relating to or connected with). The word describes something that is related to or capable of causing fire or combustion.
Think of 'setting on fire' ('incendere') to remember that 'incendiary' refers to something that can cause fire.
No commonly confused words.