1.
below the water surface; underwater
Literally refers to the area beneath the surface of water.
2.
behind the scenes; below the surface; covertly
Figuratively describes activities, negotiations, or movements that are hidden from public view.
Composed of 水面 (water surface) + 下 (below). The literal meaning refers to what is physically underwater, while the figurative meaning describes hidden activities—particularly negotiations, deals, or conflicts that are not visible to the public.
Common collocations
- 水面下で交渉する: to negotiate behind the scenes
- 水面下での動き: behind-the-scenes movements
- 水面下で進む: to proceed covertly
- 水面下での接触: secret contacts
Similar words
- 裏で: behind the scenes — more casual and everyday; 水面下 sounds more formal and is often used in news/political contexts
- 陰で: in secret — implies concealment, sometimes with a negative nuance
Usage
The figurative sense is very common in news reporting about politics, diplomacy, and business. It suggests deliberate concealment from the public eye, often with the implication that important things are happening out of sight.