A primary support or a fundamental part of something.

Something on which something else is based or depends.

निर्भरता का आधार

English Usage: "The farmer's mainstay is the corn crop."

Hindi Usage: "किसान का निर्भरता का आधार मक्का की फसल है।"

To provide support or to be a source of strength.

समर्थन देना

English Usage: "The organization aims to mainstay the welfare of the community."

Hindi Usage: "संस्थान का उद्देश्य समुदाय की भलाई का समर्थन देना है।"