0 in a way that shows you are too willing to believe that someone is telling the truth or that life is pleasant or fair:
I had always rather naively assumed that the public were respectful towards nurses and doctors.
I stupidly and naively forgot I was in front of a lot of cameras.
I naively trusted someone who I thought was an honest friend.
Naively, I turned up without a ticket, thinking it would be easy to get in.
One could naively look at big rare-gas clusters as small pieces of bulk matter and thus may ask why they deserve special attention at all.
This capacity is almost naively attributed to the uncontrollable power of his prose and to the genius of his pen.
In both cases, we are thinking naively that 'the grass must be greener on the other side of the fence'.
Naively, then, we might conclude from (5) that agnosticism is the only rational choice.