1. Subterraneous.

2. A cave or room under ground.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• aubterrane,
• zubterrane,
• xubterrane,
• dubterrane,
• eubterrane,
• wubterrane,
• sybterrane,
• shbterrane,
• sjbterrane,
• sibterrane,
• s8bterrane,
• s7bterrane,
• suvterrane,
• sunterrane,
• suhterrane,
• sugterrane,
• subrerrane,
• subferrane,
• subgerrane,
• subyerrane

• Subterraneal,
• subterraneous,
• subterfuge,
• subterranean,
• Subterraneousness,
• subterraneity,
• subterraneanly,
• Subterrene.

The adjective form of the word "Subterrane" is "subterranean".

The plural of the "Subterrane" can be the "subterranes".

The singular of the "Subterrane" can be the "Subterrane".