Pronunciation: (stelth),[key] —n. 1. secret, clandestine, or surreptitious procedure.
2. a furtive departure or entrance.
3. Obs. a. an act of stealing; theft.
b. the thing stolen; booty.
4. (cap.) Mil.a U.S. Air Force project involving a range of technologies, with the purpose of developing aircraft that are difficult to detect by sight, sound, radar, and infrared energy.
—adj. surreptitious; secret; not openly acknowledged: a stealth hiring of the competitor's CEO; the stealth issue of the Presidential race.