Far from excited about line taken temporarily (8)
I believe the answer is:
borrowed
'taken temporarily' is the definition.
'far from excited about line' is the wordplay.
'far from excited' becomes 'bored'.
'about' means one lot of letters goes inside another.
'line' becomes 'row' (row is a kind of line).
'bored' placed around 'row' is 'BORROWED'.
(Other definitions for borrowed that I've seen before include "Took a loan" , "Procured on loan" , "Undue extension of life" , "Bored row (anag.)" , "Took temporarily" .)