untrusting
/ʌnˈtrʌstɪŋ
/adjective
Not tending to believe in other people’s honesty or sincerity; suspicious: Kate became wary, furtive, and untrusting...
- Parents have got fearful and suspicious and untrusting.
- She was a very suspicious, untrusting woman, not even letting her husband fully into her heart.
- But just because I had that knowledge didn't mean that I wasn't still cautious and untrusting.