Crossword Genius

Explosively unstable (8)

Ross

I believe the answer is:

volcanic

'explosively unstable' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for volcanic that I've seen before include "Of lava-producing fissures" , "Relating to fissures which produce lava" , "Like lava, perhaps" , "given to sudden outbursts" , "Given to violent eruption like natural force" .)

I've seen this clue in The Guardian and The Irish Times.
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