私底下

sīdǐxià

privately; secretly; behind one's back

Wiktionary

Homographs

私底下 sīdǐxia
  1. privately
  2. secretly
  3. confidentially

Entry Composition

1 私 sī
  1. personal
  2. private
  3. selfish
=2 底下 dǐxia
  1. the location below sth
  2. afterwards
=2 底下 dǐxià
  1. afterwards; later
  2. below; underneath
  3. mean; base; despicable; depraved