Underground

Untegrund

(below the ground — see also subterranean)

Untegrund

(outside the mainstream)

Untergrund

(hidden, furtive)

geheim

(hidden, furtive)

heimlich

(hidden, furtive)

unterirdisch

(below the ground — see also subterranean)

unter der Erde

(below the ground)

unterirdisch

(below the ground)

Underground

(movement or organisation of people who resist artistic convention)

Untergrundorganisation

(movement or organisation of people who resist political convention)