Ao chình or ao trình (Vietnamese pronounciation of "out trình") is a combination of an English word "out" and a Vietnamese "trình" (level).

Used to describe someone who has superior qualifications and abilities, compared to their opponent.

“Quality/Level is far beyond”, “Quality/Level is beyond comparison”.

Ao chình/Ao trình has the same pronunciation as ''an eel pond'' (ao nuôi cá chình - ao chình) in Vietnamese.

Example:

Liverpool ao chình Man City this season.