1. a person or thing that compels; something that forces or drives someone to do something
Usage: often used in formal or literary contexts

Examples

• Fear was the compeller that drove him to act quickly.
• The compeller of change in the industry was new technology.
• She felt an inner compeller pushing her toward success.
• Economic necessity proved to be a powerful compeller of innovation.
• The compeller of his decision was a sense of moral duty.