extensive

large in spatial extent or range

• “an extensive Roman settlement in northwest England”
• “extended farm lands”

having broad range or effect

• “had extensive press coverage”
• “far-reaching changes in the social structure”
• “sweeping reforms”

large in number or quantity (especially of discourse)

• “she took copious notes”
• “extensive press coverage”
• “a subject of voluminous legislation”

great in range or scope

• “an extended vocabulary”
• “surgeons with extended experience”
• “extensive examples of picture writing”
• “suffered extensive damage”
• “a wide selection”

of agriculture; increasing productivity by using large areas with minimal outlay and labor

• “producing wheat under extensive conditions”
• “agriculture of the extensive type”