[as.sure] vt as.sured ; as.sur.ing [ME, fr. MF assurer, fr. ML assecurare, fr. L ad- + securus secure] (14c) 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 ~ our hearts --1 Jn 3:19 (AV)"
3: to make sure or certain: convince "glancing back to ~ himself no one was following"
4: to inform positively "I ~ you that we will do better next time"
5: to make certain the coming or attainment of: guarantee "worked hard to ~ accuracy" syn see ensure