afoot

I fear this means that there is some mischief afoot.”

He had hurried back to the house, followed within a few minutes by the police sergeant, who arrived at the scene of the crime a little after twelve o’clock, after taking prompt steps to warn the county authorities that something serious was afoot.

Is there any news of game afoot?

“Is it not extraordinary that a burglar—and a burglar who had had some previous experience—should deliberately break into a house at a time when he could see from the lights that two of the family were still afoot?”