conspiratorial /kənˌspɪrəˈtɔːrɪəl/

• 1. 

  ADJ If someone does something such as speak or smile in a conspiratorial way, they do it in a way that suggests they are sharing a secret with someone. 阴谋的 [usu ADJ n]

  例：

  His voice had sunk to a conspiratorial whisper.

  他的声音降到密谋低语的程度。