secretly
adv. 秘密地；暗自感觉地，私底下地
例句
She secretly nurtured a hope of becoming famous.
她暗暗滋生出成名的愿望。
《牛津词典》
The police had secretly filmed the conversations.
警察已秘密地把几次谈话拍摄下来。
His wife Marie secretly entered him for the championship.
他的妻子玛丽偷偷给他报名参加锦标赛。
《柯林斯英汉双解大词典》
