noun, na-adjective
suspicious behavior; acting suspiciously
Describes a person's demeanor or actions that seem furtive, evasive, or give an impression of hiding something. Often used in police or security contexts, but also in everyday situations.
彼の挙動不審な態度に警察官が気づいた。
The police officer noticed his suspicious behavior.
試験中
If you act suspiciously during an exam, you'll be suspected of cheating.