assure

verb

as·​sure ə-ˈshu̇r How to pronounce assure (audio)
assured; assuring

transitive verb

1
: to make sure or certain : convince
glancing back to assure himself no one was following
2
: to inform positively
I assure you that we can do it.
3
: to make certain the coming or attainment of : guarantee
worked hard to assure accuracy
4
: to make safe (as from risks or against overthrow) : insure
assured the security of the country
5
: to give confidence to
And hereby we know that we are of the truth, and shall assure our hearts …1 John 3:19 (King James Version)
Choose the Right Synonym for assure

ensure, insure, assure, secure mean to make a thing or person sure.

ensure, insure, and assure are interchangeable in many contexts where they indicate the making certain or inevitable of an outcome, but ensure may imply a virtual guarantee

the government has ensured the safety of the refugees

, while insure sometimes stresses the taking of necessary measures beforehand

careful planning should insure the success of the party

, and assure distinctively implies the removal of doubt and suspense from a person's mind.

I assure you that no harm will be done

secure implies action taken to guard against attack or loss.

sent reinforcements to secure their position

Examples of assure in a Sentence

I can assure you that you won't be disappointed. a minister choosing just the right words to assure the grieving parents of the fallen soldier
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Rest assured, the couple is still together and posts each other on Instagram constantly. StyleCaster, 18 Nov. 2024 Sunday’s was assured once Seahawks quarterback Geno Smith scrambled 13 yards for the deciding touchdown with 12 seconds remaining, capping an 80-yard drive inside the final three minutes. Cam Inman, The Mercury News, 17 Nov. 2024 But, one by one, procedural and legal challenges assured that those cases against Trump would not be tried until after the election. James Rainey, Los Angeles Times, 6 Nov. 2024 The outcome was all but assured in a heavily blue state where Democrats outnumber Republicans nearly two to one, according to data from Pew Research. Nico Lang, Them, 6 Nov. 2024 See all Example Sentences for assure 

Word History

Etymology

Middle English, from Anglo-French asseurer, assurer, from Medieval Latin assecurare, from Latin ad- + securus secure

First Known Use

14th century, in the meaning defined at sense 4

Time Traveler
The first known use of assure was in the 14th century

Cite this Entry

“Assure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/assure. Accessed 1 Dec. 2024.

Kids Definition

assure

verb
as·​sure ə-ˈshu̇(ə)r How to pronounce assure (audio)
assured; assuring
1
: to provide a guarantee of
assure security
2
: to give words of comfort or confidence to : reassure
tried to assure the worried children
3
: to cause to be sure or certain
assure himself that the door was locked
4
: to inform positively
can assure you of her dependability

Legal Definition

assure

transitive verb
as·​sure
assured; assuring
1
chiefly British : insure
2
a
: to inform positively
the seller assured the buyer of his honesty
b
: to provide a guarantee of

More from Merriam-Webster on assure

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