Synonyms for Wide-eyed:

adj.

all (adjective)
wide.
dewy-eyed (adjective)
inexperienced, naive.
gullible (adjective)
simple.
innocent (adjective)
open, childlike, dewy-eyed.

n.

black, absent, bug-eyed, bleak, brooding, beatific, curious, darkly, dark, appealing. unskilled, unqualified, illiterate, uneducated, be unused to (doing) something, uninitiated, untrained, untried, inexperienced. wide-eyed (noun)
opened, open, childlike, naif, wide, naive, round-eyed, simple, dewy-eyed.

Other synonyms:

adj.
naive.
n.
childlike, dewy-eyed, round-eyed, simple, wide.