Cogent (adjective)

1. Convincing and well-reasoned; clear and logical.
2. Having the power to convince; compelling and clear.
3. Presenting clear and logical reasoning.

Origin:

From latin cōgēns ("driving together, compelling"), present participle of cōgō ("drive together, collect, unite"), from com- ("together") + agō ("drive, do").

Examples:

1. He made a cogent argument for his position.
2. The lawyer's cogent analysis of the evidence was convincing.
3. The professor's cogent lecture made the material easy to understand.
4. His cogent explanation made me change my mind.
5. The scientist's cogent report convinced the committee to fund the research project.