Antonyms of adj combustive

1 sense of combustive

Sense 1
comburent, comburant, combustive -- (supporting combustion)

INDIRECT (VIA combustible) -> noncombustible, incombustible -- (not capable of igniting and burning)

Similarity of adj combustive

1 sense of combustive

Sense 1
comburent, comburant, combustive -- (supporting combustion)
       => combustible (vs. noncombustible) -- (capable of igniting and burning)