Linger behind tedious person (4)
I believe the answer is:
drag
This clue is a double definition.
'linger behind' is the first definition.
(thesaurus)
'tedious person' is the second definition.
(drag can mean a boring or tedious person)
(Other definitions for drag that I've seen before include "Pull along with effort" , "Yank" , "gay party" , "Draw slowly or heavily" , "Tedious thing" .)