肥沃 féiwò fertile
How to remember 肥沃: 肥 fat + 沃 to water = fertile.
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How it is used
- Describes rich, fertile soil/land - 肥沃的土地 (féiwò de tǔdì) fertile land.
- Reserved for soil and farmland; do NOT use it for a fertile/able-to-conceive person or animal (that is 能生育).
- Slightly literary; the everyday farm word 肥 (féi) can mean fertile too, but 肥沃 is the standard adjective.