Synonyms of the word 
IGNESCENT → COMBUSTIBLE
ignescent
- adj. Emitting sparks of fire when struck with steel; scintillating.
- n. A stone that emits sparks of fire when struck with steel.
combustible
- adj. Capable of burning.
- adj. (figuratively) Easily kindled or excited; quick; fiery; irascible.
- n. A material that is capable of burning.
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