More dangerous if derailed on the move (8)
I believe the answer is:
deadlier
'more dangerous' is the definition.
Both the definition and answer are comparative adjectives. Perhaps there's an association between them I don't understand?
'derailed on the move' is the wordplay.
'on the move' is an anagram indicator.
'derailed' with letters rearranged gives 'DEADLIER'.
'if' acts as a link.
Can you help me to learn more?
(Other definitions for deadlier that I've seen before include "More lethal or fatal" , "more like the female, it's said" .)