Crossword Genius

Sulphuric acid (7)

Ross

I believe the answer is:

vitriol

'sulphuric acid' is the definition.
(synonyms)

This is all the clue.

(Other definitions for vitriol that I've seen before include "Scathing criticism - sulphuric acid" , "Caustic words" , "Sulphuric acid or savage comment" , "Sulphuric acid and hate-filled criticism" , "Sulphuric acid; malicious criticism" .)

I've seen this clue in The Times.
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