因私

yīnsī
private (i.e. not work-related 因公 yīngōng)

CEDICT

Entry Composition

=1 因 yīn old variant of 因 yīn
=1 因 yīn
  1. cause
  2. reason
  3. because
2 私 sī
  1. personal
  2. private
  3. selfish

Related entries

列兵 lièbīng private (army)
私人 sīrén
  1. private
  2. personal
  3. interpersonal
  4. sb with whom one has a close personal relationship
  5. a member of one's clique
这是私人的。

It's something personal.

Source: Tatoeba

私家 sījiā
  1. private
  2. privately owned or managed
私密 sīmì
  1. private
  2. secret
  3. intimate
私有 sīyǒu
  1. private
  2. privately-owned
士卒 shìzú
  1. soldier
  2. private (army)
私 sī
  1. personal
  2. private
  3. selfish
私房 sīfang
  1. personal
  2. private
  3. confidential
私營 sīyíng
  1. privately-owned
  2. private
黮 tán
  1. black, dark
  2. unclear
  3. private
隱藏 yǐncáng
  1. to hide
  2. to conceal
  3. to mask
  4. to shelter
  5. to harbor (i.e. keep sth hidden)
  6. to hide oneself
  7. to lie low
  8. to nestle
  9. hidden
  10. implicit
  11. private
  12. covert
  13. recessed (lighting)
泳池被隱藏在地板之下。

The swimming pool is hidden under the floor.

Source: Tatoeba