From Longman Dictionary of Contemporary Englishstealthystealth‧y /ˈstelθi/ adjectiveHIDE/MAKE IT HARD TO FIND OR SEEmoving or doing something quietly and secretly
the stealthy approach of the soldiers —stealthily adverbExamples from the Corpusstealthy• The figure was always just ahead of him, crouchedlow but quick and stealthy.• The YF-22 proved more manoeuvrable than its opponent, although marginally less stealthy.• And his presence will cause others to become jealous, including the stealthyJack of All Trades.• There was stealthymovement at the edge of the wood.• the stealthy movements of a hunter• Fifty feet ahead, dolphins cut a stealthypath through oily waters.• Journalists now subject him to the scrutiny he avoided in his stealthy rise.• Somehow it fitted into my stealthy, secretivenature.• Yes, there it was again, a stealthy sound, quite close at hand.