Come between (9)
'come between' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for interpose that I've seen before include "Place between" , "Muscle in" , "mediate" , "Insert between (one thing and another)" , "Intervene between parties" .)
'come between' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for intervene that I've seen before include "Interfere between disputants" , "Come between; interrupt" , "Step in, become involved" , "Step in; come between" , "Mediate" .)