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

• exchange
• exchange premium
• exchange rate
• exchange traded fund
• exchange transfusion
• exchangeability
• exchangeable
• exchanged
• exchanger
• exchequer
• excipient
• excise
• excise tax
• exciseman
• excision
• excitability
• excitable
• excitable area
• excitableness
• excitant
• excitation
• excitative
• excitatory
• excite
• excited