/ stelθ; NAmE / noun , adjective
■ noun
[ U ] the fact of doing sth in a quiet or secret way :
The government was accused of trying to introduce the tax by stealth .
Lions rely on stealth when hunting.
■ adjective
[ only before noun ] ( of an aircraft ) designed in a way that makes it difficult to be discovered by radar :
a stealth bomber
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WORD ORIGIN
Middle English (in the sense theft ): probably representing an Old English word related to steal , + -th .