He spoke confidently and persuasively.

Meaning: He spoke in a way that showed he was sure of what he was saying and was able to convince others to agree with him.

Choice of Words: Confidently means with a feeling of self-assurance or certainty. Persuasively means in a way that is able to convince or influence someone. When you put them together, it means he spoke in a way that showed he was sure of what he was saying and was able to convince others to agree with him.

Alternative Expressions

Related Expressions