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

1.
geruststellen, verzekeren
say or do something to remove the doubts or fears of someone
:
•
She tried to reassure him that everything would be fine.
Ze probeerde hem te geruststellen dat alles goed zou komen.
•
His calm voice helped to reassure the frightened child.
Zijn kalme stem hielp om het bange kind te geruststellen.