The Collaborative International Dictionary
Surveillant \Sur*veil"lant\, n.; pl. Surveillants. [F., fr. surveiller to watch over. See Surveillance.] One who watches over another; an overseer; a spy; a supervisor.
Surveillant \Sur*veil"lant\, a. Overseeing; watchful.
Wiktionary
a. overseeing; watchful n. One who watches over another; an overseer; a spy; a supervisor.
Usage examples of "surveillant".
One sure lesson she had learned from her years among the men was to always hold some portion of herself in reserve, the transparency of womanhood in this insidiously surveillant society requiring here and there certain opaque gaps in order to maintain even minimal standards of sanity.
It had to be Bourne, for the terrified, youthful KGB surveillant had blurted out the information in a gushing, panicked stream of phrases and half phrases, saying anything and everything that might possibly save his life.
Every location had its own rhythm of activity that even the most experienced surveillant could inadvertently violate--a reaction against the normal flow of movement that caused visual incongruities that stood out against a composite of normal patterns and eventually betrayed a surveillance effort.
If he noticed those set to guard him in the following weeks, he did not register the surveillants with so much as a flicker of his eye.