Drunken general: that's swell (7)

I believe the answer is:

enlarge

'that's swell' is the definition.
(swell can mean to get bigger)

'drunken general' is the wordplay.
'drunken' is an anagram indicator.
'general' is an anagram of 'ENLARGE'.

(Other definitions for enlarge that I've seen before include "Expand" , "Magnify in general way" , "Describe in more detail" , "Gleaner (anag.)" , "Widen" .)

I've seen this clue in The Everyman puzzle in The Observer.

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