Definition

To make someone feel certain or confident about something; to promise or guarantee something will happen.

Example

She assured him that everything would be fine before the exam.

Tense Forms

Conversation

I hope the weather stays nice for the picnic this weekend.

Yeah, me too! I can’t wait to eat all that food.

I’ll assure you that I’ll bring the best snacks.

Awesome! That definitely makes it more exciting.

Synonyms & Antonyms

Root Explanation

Assure → It is formed from "a-" (meaning to) and "securus" (from Latin, meaning safe or secure). The word "assure" means to make someone feel safe or confident about something.

Memory Tip

Think of making someone feel 'safe' ('securus') by telling them something reassuring — that's what assure means.

Visually Confused Words