可疑 /kʰɤ˧˥ i˧˥/ Adjective

English: suspicious
Tiếng Việt: đáng ngờ

Example

他们对他可疑的举动感到不安，并联系了警方。
They became suspicious of his behaviour and contacted the police.
使用“可疑的举动”来指代行为上的不正常。