US /əˈʃɔː(ɹ)/
verb Freq #2751

Meanings

  1. 1
    verb

    To tell someone something confidently so they feel less worried.

    I assured them that traveling there was safe.

  2. 2
    verb

    To promise that something will definitely happen.

    They assured me they would be at the meeting.

  3. 3
    verb

    To make something certain or secure.

    Careful planning helped assure the success of the event.

Thesaurus

Synonyms
1 verb · to tell someone something... reassuretell
2 verb · to promise that something... promise
Word family
Forms assuredassuresassuring
Derived forms assurorover-assured

Etymology

From Old French asseurer (Modern French assurer), from Latin ad- + securus (“secure”). Cognate with Spanish asegurar. Doublet of assecure.

View etymology graph ->

Topics

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