Definitions:

1. Implies a large quantity or an overflowing amount of something. NOUN
   • The copiousness of the rainfall flooded the streets and caused widespread flooding.
2. In large amounts, or more than enough. NOUN
   • The garden was known for the copiousness of its blooms, attracting visitors from far and wide.
3. Refers to the state or quality of being abundant, plentiful, or excessively abundant. NOUN
   • The buffet offered a copiousness of food options, satisfying even the pickiest eaters.

Synonyms:

• abundance
• amplitude
• bounty
• exuberance
• fullness
• lavishness
• plenty
• richness
• superabundance