1. Decreasing.

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

• secrescent,
• cecrescent,
• fecrescent,
• recrescent,
• eecrescent,
• dwcrescent,
• dscrescent,
• ddcrescent,
• drcrescent,
• d4crescent,
• d3crescent,
• dexrescent,
• devrescent,
• defrescent,
• decrecent,
• decrescet,
• decresant,
• Decrescint,
• Decressant,
• Decresennt

• crescent.

The adjective form of the word "decrescent" is "decrescent".

The plural form of "decrescent" is "decrescents".

The singular form of the word "Decrescent" is "Decrescent". This term does not change in the singular form as it is an adjective used to describe something that is decreasing or becoming smaller.