spy upon

See: spy
References in classic literature ?
I know what you mean now: you mean that--to be let alone yourself and not followed up--you'll cease to worry and spy upon me, won't keep me so close to you, will let me go and come.
I greatly fear that no one will do you this service, and spy upon the enemy alone in the dead of night.
It was little Buulaoo, the chief's son by one of his younger wives--a vindictive, degenerate little rascal who hated Tambudza, and was ever seeking opportunities to spy upon her and report her slightest breach of custom to his father.
I protest that my action in playing the spy upon these two strangers was without assignable motive.
As for your commission, I travelled down from London alone with the man you told me to spy upon.
Duson, who has always been a spy upon my movements, was entrusted with a little sleeping draught for me, which he preferred to take himself.
And mind too that I don't pounce in upon you at unseasonable hours again, for I'll be a spy upon you, and come and go like a mole or a weazel.
The cardinal sets a spy upon a gentleman, has his letters stolen from him by means of a traitor, a brigand, a rascal-has, with the help of this spy and thanks to this correspondence, Chalais's throat cut, under the stupid pretext that he wanted to kill the king and marry Monsieur to the queen
But now, the few words luckily or unluckily heard in passing had wholly revolutionized my ideas respecting her: now I looked upon her as hypocritical and insincere, a flatterer, and a spy upon my words and deeds.
Silently they made their way to the edge of the clearing which surrounded the palisade, and here they clambered into the lower branches of a large tree overlooking the village occupied by the enemy, the better to spy upon his goings and comings.
Again he played as a puppy on the broad verandas of MISTER Haggin's plantation bungalow at Meringe; or, with Jerry, stalked the edges of the jungle down by the river-bank to spy upon the crocodiles; or, learning from MISTER Haggin and Bob, and patterning after Biddy and Terrence, to consider black men as lesser and despised gods who must for ever be kept strictly in their places.
He did not know that it had emptied rapidly as the loud scream with which his own had mingled had broken upon the startled ears of the warriors who had been sent to spy upon him.