Stealthy means to move or operate in a secretive, hidden, and quiet manner so as not to be detected. It is often used to describe someone who is trying to avoid being seen or heard while they are performing an action or moving about.
Another story takes players to the skies for dogfights, while another set in the Middle East emphasizes a more stealthy approach as opposed to the franchise's usual «blow stuff up, ask questions later» style (even if the game's stealth mechanics can often come off as frustrating). (techtimes.com)
The phone looks sort of stealthy with that matt black finish. (suggestphone.com)
Some economists remain skeptical, saying such expectations can turn very quickly or conditions can change in stealthy ways. (rismedia.com)