wide-eyed

adjective
1
with your eyes fully open because of fear, surprise, etc.
چشم‌گرد, چشم‌گشاد, حیرت‌زده, شگفت‌زده, متعجب
2
having little experience and therefore very willing to believe, trust or accept somebody/something
بی‌تجربه, ساده‌دل, ساده‌لوح, کم‌تجربه, زودباور
synonym naive