surreptitiously

[ˌsʌrəp'tɪʃəslɪ] [ˌsʌrəp'tɪʃəslɪ]
  • 形容词:surreptitious;
  • 柯林斯高阶英汉双解学习词典释义
    英英词典释义
    • Adverb
      1. in a surreptitious manner;
      "he was watching her surreptitiously as she waited in the hotel lobby"