mistrustful

After being cheated once, the old man became very mistrustful of any strangers who offered him financial advice.

(Chinese) 在被骗过一次后，那位老人对任何提供财务建议的陌生人都变得非常怀疑。

The two countries remained mistrustful of each other, refusing to sign the peace treaty without verification.

(Chinese) 两国仍对彼此互不信任，拒绝在没有核实的情况下签署和平条约。