Swell general on manoeuvres? (7)
I believe the answer is:
enlarge
'swell' is the definition.
(thesaurus)
'general on manoeuvres?' is the wordplay.
'on manoeuvres?' is an anagram indicator (the letters manoeuvre into a new form).
'general' anagrammed gives 'ENLARGE'.
(Other definitions for enlarge that I've seen before include "Amplify" , "swell?" , "Stretch" , "Expand" , "Blow up" .)