reassure[verb]Synonyms: encourage, comfort, hearten, put
or set one's mind at rest, restore confidence to
[TahlilGaran] English Synonym Dictionary ▲
re‧as‧sure /ˌriːəˈʃʊə $ -ˈʃʊr/
verb [transitive] to make someone feel calmer and less worried or frightened about a problem or situation:
Teachers reassured anxious parents.reassure somebody (that)
He tried to reassure me that my mother would be okay. [TahlilGaran] Dictionary of Contemporary English ▲