Difficulty in moving train i.e. after wreck (7)
I believe the answer is:
inertia
'difficulty in moving' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'train i e after wreck' is the wordplay.
'after' is a charade indicator (letters next to each other).
'wreck' is an anagram indicator.
'train'+'i'+'e'='trainie'
'trainie' anagrammed gives 'INERTIA'.
Can you help me to learn more?
(Other definitions for inertia that I've seen before include "Lethargy" , "Disinclination to change" , "showing reluctance to move" , "Slowness to take action, state of laziness" , "Stagnating state" .)