The natural camouflage of the Cuttlefish regularly foils surveillance by its would-be predators.
The Watergate plumbers pretended to be telephone repairmen so that they could install surveillance equipment.
My cloak of invisibility prevents surveillance.
This is a surveillance operation once the medicine is on the market.
Taylor and I rode in a surveillance truck.
Since he was suspected of committing the crime, the police kept him under surveillance.
The team has been selected toparticipate in a covert surveillance operation next week.
During the 2012 London Olympics, surveillance was maintained by the usage of CCTVs.
Her job as a private investigator require familiarity with surveillance technology, and old fashioned sleuthing skills. The word sleuthing is a verb.
SRVLLNC
The adjectives are the participles, surveilled or surveilling.
The whole crime was caught on the surveillance cameras outside the Wal-Mart store.
Surveillance - the art of surveying. Usually from afar, and unbeknownst to the surveyed.The mobster had been under surveillance for some time, but the police still didn't have enough concrete evidence to make their arrest.This area is under constant CCTV surveillance. No Loitering.
Surveillance is a noun and so doesn't have any tenses. Only verbs have tenses. *Added by T.Sampson - The person posing the question is likely asking for the past tense of 'surveill', which would be 'surveilled', and present tense which is 'surveilling'....
Since he was suspected of commiting the crime, the police kept him under surveillance.The company installed a surveillance system in the supply room to try to reduce the excessive losses.