Support Lincoln Town at the outset (4)
I believe the answer is:
abet
'support' is the definition.
(thesaurus)
'lincoln town at the outset' is the wordplay.
'lincoln' becomes 'abe'.
'at the outset' says to take the initial letters.
The initial letter of 'town' is 't'.
'abe'+'t'='ABET'
(Other definitions for abet that I've seen before include "Support, aid" , "Assist wrongly!" , "Aid in offence" , "Make good" , "Help a criminal" .)