Easily influenced to stay in shot (7)
I believe the answer is:
plastic
'easily influenced' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs can sometimes mean the same thing.
'stay in shot' is the wordplay.
'stay' becomes 'last'.
'in' is an insertion indicator.
'shot' becomes 'pic' (I've seen this in another clue).
'last' going into 'pic' is 'PLASTIC'.
'to' is the link.
Can you help me to learn more?
(Other definitions for plastic that I've seen before include "source of credit" , "Artificial/synthetic" , "credit may be on it" , "Easily shaped/moulded" , "Unattractively artificial" .)