assuasive
/ˌæsuˈæsɪv, ˌæsˈjuːæsɪv/Definitions
1. adjective
tending to soothe or pacify; having a calming or conciliatory effect
“The assuasive words of the mediator helped to ease tensions between the two parties.”
2. noun
a person or thing that is soothing or pacifying
“The doctor’s assuasive bedside manner helped to calm the patient’s fears.”