assure
Meaning
to tell someone that something will definitely happen or is definitely true so that they are less worried
to make something certain to happen or to be achieved
Structure
Usage
i can assure you that the information is confidential.
the contract assures the company of a steady supply of materials.
his calm demeanor assured the team that the situation was under control.
Etymology
the word 'assure' entered middle english from old french 'asseurer', which itself was built upon the latin elements 'ad-' (to) and 'securus' (secure, safe). the literal sense of 'making (someone) secure or certain towards a fact' evolved from a physical guarantee of safety to a more abstract verbal act of giving confidence or a promise. this semantic shift reflects the movement from concrete security to psychological certainty, solidifying its modern meaning of declaring something definitively true to remove doubt.
Analysis
ad- (latin, prefix meaning 'to, towards'); sure (from latin 'securus', meaning 'secure, safe, certain')