verb
assure
uh-SHOOR/əˈʃʊr/
To establish confidence or certainty that something is so.
The teacher assures the worried student that the presentation will go well.

Etymology
The pieces express making someone secure or free from care. In this sense, that security is confidence supplied by a promise or statement that removes worry.
In context
telling those he healed to not tell anyone was a way to assure the community he was not performing miracles to claim honor for himself but that he only wanted to help
More examples
- Careful preparation assured the project's success.
- She kept assuring him that no apology was needed.
- The extra funding will help assure continued access to the service.
Forms
assure · assures · assured · assuring
Similar words
- reassure
- Specifically restores confidence or relieves an existing worry.
- ensure
- Focuses on making an outcome certain rather than telling someone.