Something Americans use to describe everything.

You.

The American adjective. A concept, object or act whose worth lies somewhere between non-objectional and life changing.

Use: in leiu of all other adjectives.

Extremely impressive or daunting; inspiring great admiration, apprehension, or fear.
Extremely good; excellent.

See 'Prussia' for Hetalia:Axis powers/ Hetalia world series

A 'sticking plaster' word used by Americans to cover over the huge gaps in their vocabulary. It is one the three words which make up most American sentances.