reassure
US /ˌriː.əˈʃʊr/
UK /ˌriː.əˈʃʊr/

1.
meyakinkan, menenangkan
say or do something to remove the doubts or fears of someone
:
•
She tried to reassure him that everything would be fine.
Dia mencoba meyakinkannya bahwa semuanya akan baik-baik saja.
•
His calm voice helped to reassure the frightened child.
Suara tenangnya membantu menenangkan anak yang ketakutan itu.