1. Sexual intercourse between unmarried persons; the criminal conversation of a married man with an unmarried woman; adultery; incest; idolatry, or a forsaking of the true God, and worshipping of idols; an arching; the forming of a vault.

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

• fornacation,
• farication,
• formigation,
• sonnication,
• fornications,
• counication,
• formicationn,
• formication,
• formacation,
• fourmication,
• forniction,
• fornicaton,
• fornicationn,
• fornicition,
• lorrication,
• mordicatin,
• morsigation,
• sporfication,
• connication,
• cornicopion

• formic acid,
• formication,
• fornicate,
• fornicator,
• fornicatress,
• formicate.

The adjective form of the word "fornication" is "fornicatory".

The plural of the "fornication" can be the "fornications".

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