Suggest a very boring trip (7)
I believe the answer is:
advance
'suggest' is the definition.
(advancing is a kind of suggesting)
'a very boring trip' is the wordplay.
'very' becomes 'v' (abbreviation).
'boring' indicates putting letters inside (some letters must 'bore' a hole into other letters).
'trip' becomes 'dance' (trip can mean to dance).
'v' put inside 'dance' is 'dvance'.
'a'+'dvance'='ADVANCE'
(Other definitions for advance that I've seen before include "Suggest" , "Publisher's payment" , "Forward movement, a change for the better" , "Bring forward" , "borrowed money" .)