Anonymous travelling salesmen (8)
I believe the answer is:
nameless
'anonymous' is the definition.
('nameless' can be similar in meaning to 'anonymous')
'travelling salesmen' is the wordplay.
'travelling' indicates an anagram.
'salesmen' with letters rearranged gives 'NAMELESS'.
(Other definitions for nameless that I've seen before include "Too horrific to be described" , "like the guy in the spaghetti movies?" , "This undistinguished" , "Difficult to describe" , "Too unpleasant" .)