EXAMPLES FROM THE WEB FOR SPYING
That's the only incentive you can suggest for spying, unconnected with my affairs?
I congratulate you on the success of your first attempt at spying.
I suppose Tris Penrose has been spying me and telling tales to father and you.
She passed quickly by, so as not to seem to be spying on them.
Whereupon I turned to the spying friar and said; 'Hand me your robe and cowl.'
I was not spying then, but you thought I was, and you didn't like it.
He's spying out a fresh tribe in the neighborhood of Africa.
Powell did not detect any particular excellence in what seemed a spying employment.
Ginny Cox, spying Jerry from across the room, bolted to her.
Only—if I were spying, I should expect to have notice given me.
mid-13c., from Old French espier "to spy," probably from Frankish *spehon, from Proto-Germanic *spekh- (cf. Old High German *spehon "to look out for, scout, spy," German spähen "to spy," Middle Dutch spien), the Germanic survivals of the productive PIE root *spek- "to look" (see scope (n.1)).