Definition

To make someone or something immune to a disease, usually by giving them a vaccine.

Example

The doctor will immunise the children against measles.

Tense Forms

Conversation

Have you heard about the new vaccine that can immunise us from the flu this season?

Yeah, I read an article about it; it sounds promising!

I think it's important to immunise ourselves and stay healthy, especially with all the viruses going around.

Definitely! I'm planning to get it as soon as it's available.

Synonyms & Antonyms

Root Explanation

Immunise → It is formed from "immunis" (from Latin, meaning exempt or free from) and the suffix "-ise" (meaning to make or to become). The word "immunise" means to make someone exempt from a disease or to provide immunity.

Memory Tip

Think of making someone 'exempt' ('immunis') from illness — that's why immunise means to protect against disease.

Visually Confused Words