低三下四

低三下四

Literally means:

low three and low four

Actually means:

subservient

It describes those who lack moral integrity and show their inferiority in front of powerful or influential people and fawn on them all the time. It often indicates that such an act is contemptible. Derogatory.

形容没有骨气，在有权有势的人面前表现出低人一等，对他们点头哈腰，并处处讨好他们。多有让人看不起的意味。具有贬义色彩。