1. A falling short; want; defect. Deficiency bills, an advance made to Government by the Bank of England whenever the taxes received are insufficient to pay the public dividends due on Government stocks.

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

• deficency,
• deficiencey,
• deficieny,
• deficiency,
• deficienci,
• seficience,
• xeficience,
• ceficience,
• feficience,
• reficience,
• eeficience,
• dwficience,
• dsficience,
• ddficience,
• drficience,
• d4ficience,
• d3ficience,
• Deficiense,
• Deficiencecy,
• Deficienecy

The plural of the "Deficience" can be the "deficiences".

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