say it: KOH-pee-uhs
copious is an adjective meaning "large in number or quantity (especially of discourse)". It carries 2 recorded senses.
large in number or quantity (especially of discourse)
“she took copious notes”
“a subject of voluminous legislation”
Definitions, synonyms and semantic relations for copious come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.