Main Entry:

as·sure

Pronunciation:

\ə-ˈshu̇r\

Function:

transitive verb

Inflected Form(s):

as·sured; as·sur·ing

Etymology:

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

Date:

14th century

1 : to make safe (as from risks or against overthrow) : insure 2 : to give confidence to <and hereby we know that we are of the truth, and shall assure our hearts — 1 John 3:19(Authorized Version)> 3 : to make sure or certain : convince <glancing back to assure himself no one was following> 4 : to inform positively <I assure you that we can do it> 5 : to make certain the coming or attainment of : guarantee <worked hard to assure accuracy>

synonyms see ensure