1. Large in number or quantity (especially of discourse)
   "she took copious notes"
   - voluminous 
2. Affording an abundant supply
   "copious provisions"
   - ample, plenteous, plentiful, rich

See also: abundant, copiously, copiousness

• know what's what
• know-all
• know-how
• know-it-all
• Know-Nothing Party
• knowable
• knower
• knoweth
• knowing
• knowingly
• knowingness
• knowledgable
• knowledge
• knowledge base
• knowledge domain
• knowledge economy
• knowledgeability
• knowledgeable
• knowledgeableness
• knowledgeably
• Knowlton's cactus
• known
• Knox
• Knoxville
• knuckle