- 1to say or do something that makes someone less frightened or worried synonym set somebody's mind at rest
- 2 reassure somebody (about something) They tried to reassure her, but she still felt anxious. reassure somebody that… The doctor reassured him that there was nothing seriously wrong.
NAmE//ˌriəˈʃʊr//Verb Forms present simple I / you / we / they reassure
he / she / it reassures
past simple reassured
-ing form reassuring