trusting
Definitions
Inclined to believe in the honesty, reliability, or sincerity of others.
Showing or characterized by a lack of suspicion or wariness.
Examples
She has a trusting nature that makes her easy to get along with.
Being too trusting can sometimes lead to people taking advantage of you.
The child looked up at the stranger with a trusting smile.
Synonyms
gullible naive unsuspicious credulous confiding ingenuous unskeptical