Translation

疑っている / 怪しい / 不審な

Meaning

Suspicious means feeling that someone or something may be dishonest, dangerous, or wrong, or seeming likely to be so. It can describe either the person who doubts or the thing that causes doubt. Do not confuse it with auspicious, which means promising.

Examples

• 警察はその不審な車に気づきました。
  The police noticed the suspicious car.
• 彼女は突然の申し出を疑わしく思いました。
  She was suspicious of the sudden offer.