Crossword Genius

Gas somewhat dear, go nuclear (5)

Ross

I believe the answer is:

argon

'gas' is the definition.
(argon is a gas)

'somewhat dear go nuclear' is the wordplay.
'somewhat' indicates a hidden word.
'ARGON' is hidden within 'dear go nuclear'.

(Other definitions for argon that I've seen before include "Gas used in electric lights" , "17 [GAS]" , "Gaseous element" , "An insert gas to groan about" , "something inert and insubstantial" .)

I've seen this clue in The Times.
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