unsuspecting
I
adjective
believing, credulous, easily deceived, gullible, incautus, innocent, minime suspicax, naive, off guard, simple, trustful, trusting, unaware, unconscious, undoubting, unexpectant, unguarded, unquestioning, unsuspecting, unsuspicious, unwarned, without suspicion
II
index
credulous, definite, incognizant, insensible, naive, secure (confident), unaware, unsuspecting, unwitting
Burton's Legal Thesaurus.
William C. Burton.
2006