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1. Large in spatial extent or range or scope or quantity
   "an extensive Roman settlement in northwest England"; "they suffered extensive damage"
   - extended
    
2. Broad in scope or content
   - across-the-board, all-embracing, all-encompassing, all-inclusive, blanket, broad, encompassing, panoptic, wide
    
3. Of agriculture; increasing productivity by using large areas with minimal outlay and labour
   "producing wheat under extensive conditions"; "agriculture of the extensive type"

See also: big, comprehensive, extend, extensively, extensiveness, large

Antonym: intensive

Encyclopedia: Extensive