Reportedly, girl tricked a reptile (8)
I believe the answer is:
anaconda
'reptile' is the definition.
(anaconda is a kind of reptile)
'reportedly girl tricked a' is the wordplay.
I cannot quite understand how this works, but
'girl' could be 'con' and 'con' is located in the answer.
'a' could be 'an' and 'an' is present in the answer.
The remaining letters 'ada' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
(Other definitions for anaconda that I've seen before include "Snake of the boa family" , "Water boa" , "The largest snake" , "Huge South American snake" , "Large boa of South America" .)