Crossword Genius

Threaten head of government in royal house (4,4)

Ross

I believe the answer is:

hang over

'threaten' is the definition.
(thesaurus)

'head of government in royal house' is the wordplay.
'head of' says to take the initial letters.
'in' indicates putting letters inside.
'royal house' becomes 'hanover' (I've seen this before).
The first letter of 'government' is 'g'.
'g' going inside 'hanover' is 'HANG OVER'.

I've seen this clue in The Telegraph.
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