The term "un tilled" refers to land that has not been plowed, cultivated, or prepared for planting. The antonyms for this word include words like cultivated, tilled, irrigated, fertilized, and prepared. Cultivated land is soil that has been treated to increase the growth of crops by removing rocks, debris, and weeds, whereas tilled land is ground that has been turned over and prepared for planting. Irrigated land is soil that has been artificially watered, and fertilized land is that which has been enriched with nutrients to promote plant growth. These antonyms are essential concepts for anyone involved in farming or agriculture, as they form the basis for successful crop growth and development.