Hurried back up and cast off (6)
I believe the answer is:
pushed
'hurried' is the definition.
(thesaurus)
'back up and cast off' is the wordplay.
'back' says the letters should be written in reverse.
'and' says to put letters next to each other.
'cast off' becomes 'she'd' (synonyms).
'up' backwards is 'pu'.
'pu'+'shed'='PUSHED'
(Other definitions for pushed that I've seen before include "Drove forward; short of money" , "Shoved" .)