Not raising, or tending to raise, suspicion: as, unsuspicious conduct.
Not passed in suspicion; free from anything likely to cause suspicion.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. not suspicious
Word Usage
"And just as he kept saying no one, not even media, is allowed to go in anymore, vans of TV stations and other 'unsuspicious' vehicles kept passing through."