[I or T] to have belief or confidence in the honesty, goodness, skill or safety of a person, organization or thingMy sister warned me not to trust him.
Trust me - I know about these things.
Trust your instincts and do what you think is right.
I don't trust air travel - it's unnatural.
[+ object + to infinitive] I trust him to make the right decision.
That man is not to be trusted.
I wouldn't trust him with my car.
slightly formal Sometimes you simply have to trust in the goodness of human nature.
However much you plan an expedition like this, you still have to trust to luck to a certain extent.