Crossword Genius

Explosively unstable (8)

Ross

I believe the answer is:

volcanic

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">explosively unstable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(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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