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