suspect; doubt
彼の誠実さを疑うのなら彼に援助を求めるな。
If you doubt his integrity, don't ask him for help.
評判の正直者を疑うのが俺達の商売さ
Our business is to suspect even those renowned for their honesty.
— サイコ (1960)
バカこれでも私を疑うの?
Idiot. You still don't trust me?
— オールド・ボーイ (2003)
わたしはそれの真意を疑う。
I doubt its true meaning.
私はその文書が本物かを疑う。
I doubt whether that document is authentic.
人を疑うのもいい加減にしろ
Enough with suspecting everyone.
— 自転車泥棒 (1948)