Voyager's tense tangle with the French Resistance (9)
I believe the answer is:
traveller
'voyager's' is the definition.
(I've seen this before)
'tense tangle with the french resistance' is the wordplay.
'tense' becomes 't' (abbreviation used in many dictionaries).
'tangle' becomes 'ravel' (synonyms).
'with' says to put letters next to each other.
'the french' becomes 'le' ('the' in French).
'resistance' becomes 'r' (abbreviation in physics and electronics).
't'+'ravel'+'le'+'r'='TRAVELLER'
(Other definitions for traveller that I've seen before include "One on a trip" , "asked if anybody was there" , "Rover" , "He trips off" , "Gypsy" .)