Unpersuasible is a word that means not easily convinced or swayed. Synonyms for unpersuasible include unyielding, adamant, resolute, inflexible, immovable, determined, unwavering, unrelenting, stubborn, and obstinate. These words all suggest a person who is firm in their beliefs and cannot be easily persuaded or influenced by outside factors. While these qualities may be admirable in some contexts, they can also be problematic when someone is unwilling to consider new information or change their perspective. It's important to be open-minded and willing to listen to different viewpoints in order to grow and learn as a person.