1. The state of being sufficient; qualification for any purpose; competence; adequate supply; adequate power; conceit; self-confidence.

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

• sufficency,
• sufficientt,
• sufficieny,
• sufficientcy,
• sufficenty,
• suffiency,
• sufficien,
• fficiency,
• effficiency,
• sufficienct,
• sufficiancy,
• suffeciency,
• suffieciency,
• sufficienty,
• suficiency,
• sufficincy,
• suifficience,
• suficience,
• sufficience,
• Sufficiance

• sufficient,
• sufficiently.

The adjective form of the word "sufficiency" is "sufficient".

The plural of the "sufficiency" can be the "sufficiencies".

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