 Re: fair game
No - because if the police don't have the necessary proof for to arrest a specific person, then there is no reason for the suspect to be "hiding". If I say "the criminal is still at large" it means either
a) The police don't know who the criminal is (or can't prove it even if they suspect) and therefore no specific individual is implicated. They just know that there is a criminal and s/he is still free.
or
b) The police know who the criminal is and have enough proof for the arrest, but can't find the person. S/he is "on the run"
So, as I said, "at large" can be used in both contexts, but "on the run" is more specific and restricted to the second situation. |