Definition of assure
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)
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
Origin and Etymology of assure
Middle English, from Anglo-French asseurer, assurer, from Medieval Latin assecurare, from Latin ad- + securus secure
First Known Use: 14th century
Synonym Discussion of assure
ASSURE Defined for English Language Learners
Definition of assure for English Language Learners
: to make (something) certain
: to tell someone in a very strong and definite way that something will happen or that something is true
ASSURE Defined for Kids
Definition of assure for Students
1 : to give certainty, confidence, or comfort to He assured the children all was well. She assured herself that the doors were locked.
2 : to inform positively I assure you that you won't be disappointed.
3 : to provide a guarantee of assure their safety Hard work assures success.
Legal Definition of assure
1 chiefly Brit : insure
2a : to inform positively the seller assured the buyer of his honesty b : to provide a guarantee of
Seen and Heard
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