1. surreptitious - Adjective
2. surreptitious - Adjective Satellite
Done or made by stealth, or without proper authority; made or introduced fraudulently; clandestine; stealthy; as, a surreptitious passage in an old manuscript; a surreptitious removal of goods.
Source: Webster's dictionaryFor several days after my first book was published, I carried it about in my pocket and took surreptitious peeps at it to make sure the ink had not faded. J. M. Barrie
Having exposed its fangs publicly, Washington will not readily admit it miscalculated horribly. If Modi comes to power, a working relationship with the US Embassy will be established. But let us have no doubts that the repair job will also be accompanied by surreptitious attempts to undermine him. Swapan Dasgupta
I was a really bad teenager and I got my tongue pierced. I don't even remember where I did it, but it was under very surreptitious circumstances. Lucy Alibar
clandestine intelligence operations Source: Internet
cloak-and-dagger activities behind enemy lines Source: Internet
hole-and-corner intrigue Source: Internet