surreptitious

详细解释:a. 秘密的, 暗中的, 偷偷摸摸的
【法】 鬼鬼祟祟的, 秘密的, 欺骗的

词型变化：

名词:surreptitiousness副词:surreptitiously

英语解释：

形容词 surreptitious:

marked by quiet and caution and secrecy; taking pains to avoid being observed同义词：furtive, sneak, sneaky, stealthy