persuasive
adj.adj. good at making people believe or do something. You use this to describe someone who gives very strong reasons for their ideas.
adj. capable of convincing others through logical argument or emotional appeal. Often used to describe speakers, writers, or the evidence they present.
She gave a very persuasive speech about climate change.
The lawyer presented a persuasive argument that convinced the jury of his client's innocence.
Despite the lack of physical evidence, her persuasive narrative of the events was so internally consistent that it swayed the entire committee.
From Middle French persuasif, from Medieval Latin persuāsīvus, from Latin past participle stem of persuādēre + -īvus.
Commonly used both attributively before a noun and predicatively after linking verbs like 'be', 'seem', or 'become'.