Weltanschauung /veltˈan-show-ŭng/ noun

Outlook on the world, world philosophy

Weltgeist /veltˈgīst/ noun

The world spirit

Weltpolitik /veltˈpol-i-tēk/ noun

1. World politics
2. The policy of taking a forceful part in international affairs

Weltschmerz /veltˈshmerts/ noun

1. World sorrow
2. Sympathy with universal misery
3. Sadness for the human lot
4. World-weariness
5. Thoroughgoing pessimism

Weltstadt /veltˈshtat/ noun

A cosmopolitan city