[stealth] n [ME stelthe; akin to OE stelan to steal] (13c) 1 a archaic: theft b obs: something stolen
2: the act or action of proceeding furtively, secretly, or imperceptibly "the state moves by ~ to gather information --Nat Hentoff"
3: the state of being furtive or unobtrusive
4: an aircraft-design characteristic consisting of oblique angular construction and avoidance of vertical surfaces that is intended to produce a very weak radar return