耕す

The primary meaning refers to the physical act of turning over soil to make it fertile and ready for planting. It evokes an image of hard, manual labor and the preparation phase of agriculture.

When used metaphorically, it describes the process of refining one's mind, spirit, or character. This usage implies a slow, steady, and disciplined effort to improve oneself, similar to how a farmer patiently tends to the land. It is often used in spiritual, philosophical, or educational contexts.

Crucially, while the English word "cultivate" can be used for developing relationships or habits (e.g., "cultivating a friendship"), the Japanese verb "耕す" is almost never used in this way. Using "耕す" for social relationships would sound unnatural and overly literal. For such contexts, verbs like "築く" (to build) or "育む" (to nurture) are appropriate.