Hasty when pushed (7)
I believe the answer is:
hurried
I believe this clue is a double definition.
'hasty' is the first definition.
(similar in meaning)
'pushed' is the second definition.
(thesaurus)
'when' acts as a link.
(Other definitions for hurried that I've seen before include "Rushed" , "Hastened" , "Made haste" , "Moved quickly" , "Got a move on" .)