A trick to avoid (5)
I believe the answer is:
dodge
This clue is a double definition.
'a trick' is the first definition.
(thesaurus)
'avoid' is the second definition.
(dodging is a kind of avoiding)
'to' is the link.
(Other definitions for dodge that I've seen before include "Avoid - ruse" , "Evasion" , "Sidestep with trick?" , "Cunning move" , "Avoid or attempt to" .)