Antonyms of adj fusible

1 sense of fusible

Sense 1
fusible -- (capable of being melted and fused)

INDIRECT (VIA melted) -> unmelted -- (not melted; "streets unpassable because of piles of unmelted snow")

Similarity of adj fusible

1 sense of fusible

Sense 1
fusible -- (capable of being melted and fused)
       => melted (vs. unmelted), liquid, liquified -- (changed from a solid to a liquid state; "rivers filled to overflowing by melted snow")