assure
Cross references: 1. ensure as.sure \*-'shu.(*)r\ vt [ME assuren, fr. MF assurer, fr. ML assecurare, fr. L ad-)X + securus secure 1: to make safe (as from risks or against overthrow) : INSURE 2: to give confidence to : REASSURE to make sure or certain : MCONVINCE 4: to inform positively 5: to make certain the coming or attainment of : GUARANTEE