相关单词同义词secret, chamber, inside, cabinet, 近义词 closet 壁橱, invisible 看不见的, underground 地下的, secret 秘密, clandestine 秘密的(常指违法的行为)..., hidden 隐藏的, covert 隐蔽的, buried 埋在地下的, concealed 隐藏的, obscured 动词obscure的过去..., cloak-and-dagger 有关阴谋或间谍的..., hush-hush 秘密的, hole-and-corner 秘密的, surreptitious 暗中进行的, hugger-mugger 秘密的临近词undercut, under, undercoverage, undercover men, undercover man, undercover work, undercover agent, undercover police, undercover adj., Undercover Options, undercover officer, undercover of night相似词underclass, underclothes, undercoat, undercook, undercurrent, undercut, underdeveloped, underdog, 返回 undercover