One may not hold his cards beneath the table or move them back and forth in a suspicious manner.

He edged around the pyramid in a suspicious manner.

He talks of her constantly, writes poetry, and moons about in a most suspicious manner.

The men looked him over in a suspicious manner.

He had good eyes and a restless, suspicious manner: always looking behind him.

Another woman acts in a most suspicious manner.

It was running without lights and closing the task group in a suspicious manner.

"Is it," pursued the stranger in his most sarcastic and suspicious manner, "the printed paper you have just been reading from?"

She kept to herself and didn't seem to act in any suspicious manner.

Have you have you ever seen anybody acting in a suspicious manner?