Antonyms of adj ignescent

1 sense of ignescent

Sense 1
ignescent -- (can emit sparks or burst into flame)

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

Similarity of adj ignescent

1 sense of ignescent

Sense 1
ignescent -- (can emit sparks or burst into flame)
       => combustible (vs. noncombustible) -- (capable of igniting and burning)