the word 'stealth' originates from the old english adjective 'stælþ', which itself was derived from the verb 'stelan', meaning 'to steal'. the original sense was closely tied to the act of theft, implying secretive, furtive movement. over time, the meaning broadened from the specific context of stealing to encompass any clandestine or covert action intended to avoid detection. this semantic evolution reflects a shift from the literal act of taking property to the abstract quality of secrecy and concealment, a concept now central to its modern definitions in both general and military-technical contexts.

the word is a simplex derived from a single old english root. it is not productively formed from smaller, independent morphemes in modern english.