I. mis ‧ trust 1 /mɪsˈtrʌst/ BrE AmE noun [uncountable]
the feeling that you cannot trust someone, especially because you think they may treat you unfairly or dishonestly SYN suspicion , distrust
mistrust of
He had a deep mistrust of the legal profession.
II. mistrust 2 BrE AmE verb [transitive]
[ Word Family: adjective : ↑ trusting , ↑ trustworthy ≠ ↑ untrustworthy , ↑ trusty , ↑ distrustful , ↑ mistrustful ; noun : ↑ trust ≠ ↑ distrust ≠ ↑ mistrust , ↑ trustee , ↑ trusteeship , ↑ trustworthiness ; verb : ↑ trust ≠ ↑ distrust ≠ ↑ mistrust ]
to not trust someone, especially because you think they may treat you unfairly or dishonestly SYN distrust :
As a very small child she had learned to mistrust adults.
—mistrustful adjective :
Some people are very mistrustful of computerised banking.