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assure

verbcommon in dialogue

  • United States//əˈʃʊɹ//
  • United States//əˈʃɝ//
  • //əˈʃɔː(ɹ)//
  • //əˈʃʊə(ɹ)//

To make sure and secure; ensure.

verb

  1. 1

    To make sure and secure; ensure.

  2. 2

    To give (someone) confidence in the trustworthiness of (something).

    I assure you that the program will work smoothly when we demonstrate it to the client.

    He assured of his commitment to her happiness.

  3. 3

    obsoleteTo guarantee, promise (to do something).

    That as a law for euer should endure; / Which to obserue in word of knights they did assure.

  4. 4

    To reassure.

Etymology

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

Forms

past tense
assured
past participle
assured
present participle
assuring
third person singular
assures
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).