IPA: /pərˈsweɪsɪvnəs/
KK: /pɚˈsweɪsɪvnəs/
The ability to convince someone to believe or do something.
Her persuasiveness helped her win the debate.
Persuasiveness → It is formed from "persuadere" (from Latin, meaning to convince or persuade) and the suffix "-ness" (meaning the state or quality of). The word "persuasiveness" refers to the quality of being able to convince or influence others.
Think of the Latin root 'persuadere' which means to convince, and remember that 'persuasiveness' is the quality of being able to convince others.