Regularly strives to get even (3)
I believe the answer is:
tie
'get even' is the definition.
(I've seen this before)
'regularly strives' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'strives' are 'TIE'.
'to' is the link.
(Other definitions for tie that I've seen before include "Finish level" , "It's worn under the collar" , "Neckwear item" , "Bind; be equal" , "Fasten, link to" .)