Aged terror, moving backwards (10)

I believe the answer is:

retrograde

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'aged terror moving backwards' is the definition.
I can't judge whether this definition defines the answer.

'aged terror moving' is the wordplay.
'moving' is an anagram indicator (letters are moved around).
'aged'+'terror'='agedterror'
'agedterror' with letters rearranged gives 'RETROGRADE'.

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(Other definitions for retrograde that I've seen before include "degenerate" , "turning back" , "Moving backwards" , "Backward" , "Declining" .)

I've seen this clue in The Daily Express.

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