sweet A1

/swit/ in an affectionate or loving manner (`sweet' is sometimes a poetic or informal variant of `sweetly')

persuade B1

/pə(ɹ)ˈsweɪd/ To successfully convince (someone) to agree to, accept, or do something, usually through reasoning and verbal influence.

persuasive B1

/pə(ɹ)ˈsweɪsɪv/ intended or having the power to induce action or belief

persuasion B2

/pɚˈsweɪʒən/ The act of persuading, or trying to do so; the addressing of arguments to someone with the intention of changing their mind or convincing them of a certain point of view, course of action etc.