Distrust, Mistrust, Discredit, Unfaithfulness
noun, の adjective
When you can't (not) believe in someone, it's because you distrust them. Maybe someone discredited them and now you mistrust everything they say.
ふしん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
正直、その店員の言葉には、少し不信感を感じました。
To be honest, I felt a bit of distrust in the words of that shop assistant.
私はそのことがきっかけで、人間不信になってしまいました。
As a result of that incident, I became distrustful of people.
色々な方から話を聞くたびに、この国の医者への不信はつのるばかりです。
Every time I hear from different people, my distrust towards doctors in this country only grows.