Crossword Genius

Seems put out - may become violent (11)

Ross

I believe the answer is:

tempestuous

'violent' is the definition.
(thesaurus)

'seems put out may become' is the wordplay.
'may become' indicates anagramming the letters.
'seems'+'put'+'out'='seemsputout'
'seemsputout' is an anagram of 'TEMPESTUOUS'.

(Other definitions for tempestuous that I've seen before include "Very stormy" , "Seems put out (anag)" .)

I've seen this clue in The Globe and Mail.
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