Surreptitious (adjective)

Done in a sneaky or secretive manner, especially so as to not be detected or observed.

Origin:

The word 'surreptitious' is derived from the latin word 'surripere' meaning 'to take or carry off secretly'. it refers to something that is done in a sneaky or secretive manner.

Examples:

1. The surreptitious meeting was held in a secret location to avoid being overheard.
2. The surreptitious operation was carried out under the cover of darkness.
3. The surreptitious recording was made without the subject's knowledge.
4. The surreptitious entry was made through a hidden door.
5. The surreptitious behavior raised suspicions among the investigators.